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sidra
10/12/2025
Law
OCR Criminal Law Revision Guide
2,166
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10 Dec 2025
•
sidra
@s1dra_h
Get ready to tackle A-level Criminal Law! This revision guide... Show more











Your Criminal Law exam makes up 33.3% of your total A-level - so it's crucial to get this right! The paper splits into two sections: Legal System (20 marks) and Criminal Law (60 marks), giving you 2 hours to show what you know.
Here's what you're facing: Section A needs one 8-mark question and one 12-mark question from your choices. Section B requires all three 20-mark questions, but you can choose between Part 1 or Part 2. That works out to roughly a mark per minute, so time management is key.
The marking uses three assessment objectives. AO1 tests your knowledge (8 marks), whilst AO2 checks if you can apply law to scenarios and AO3 evaluates your analysis skills (both worth 12 marks each). Essay questions focus on AO1 + AO3, while scenario questions combine AO1 + AO2.
Top Tip: Always cite cases and Acts of Parliament - and never write lists! Use continuous sentences and refer to scenario names.

Think of actus reus as the physical side of crime - what actually happened. You'll find three types: voluntary acts (Hill v Baxter), failure to act (omissions), and state of affairs cases like Larsonneur where someone's guilty despite acting involuntarily.
Omissions are tricky because Britain doesn't have a 'Good Samaritan' law. However, you can be liable for failing to act in six situations: statutory duties, contractual duties (Pittwood), relationship duties (Gibbins & Proctor), voluntarily assumed duties (Stone & Dobinson), official positions (Dytham), and when you've started a chain of events (Miller).
Causation requires proving both factual and legal cause. Use the 'but for' test - would the victim still be alive 'but for' the defendant's actions? Remember the 'thin skull' rule from Blaue - you take your victim as you find them.
Medical treatment rarely breaks the chain of causation unless it's 'so potent' it makes the defendant's act insignificant (Cheshire). The victim's own actions won't break the chain unless they're 'so daft or unexpected' (Roberts).
Remember: The defendant's act only needs to be 'more than minimal' - it doesn't have to be the main cause!

Mens rea examines what was going through the defendant's head when they committed the crime. Without it, you usually get an acquittal. The four levels are intention (highest), recklessness, negligence, and knowledge.
Intention comes in two flavours: direct (wanting the result) and oblique (foreseeing it as virtually certain). The journey from Moloney through Nedrick to Woollin shows how courts struggled with this concept. Today's test asks whether death or serious harm was a virtual certainty and whether the defendant realised this.
Recklessness uses a subjective test after G v R - did the defendant know there was a risk but take it anyway? It's sufficient for 'basic intent' crimes like assault and manslaughter. The old objective Caldwell test caused too many problems.
Special rules help when things go wrong: transferred malice (Latimer) covers when you hit the wrong person, while cases like Fagan show that actus reus and mens rea can coincide across a continuing series of acts.
Key Point: Foresight of consequences isn't intention itself - it's just evidence that might help prove intention!

Strict liability offences don't require mens rea - you can be guilty even if you're completely blameless! These typically involve regulatory matters like food safety, building regulations, or selling age-restricted products.
When statutes aren't clear, courts apply the Gammon tests: start by presuming mens rea is required, check for mental state words in the Act, distinguish between 'true crimes' (imprisonment possible) and regulatory offences, consider how dangerous the activity is, and ask whether strict liability promotes higher safety standards.
Cases like Harrow LBC v Shah show the harsh reality - selling lottery tickets to someone underage made the defendants guilty despite taking reasonable precautions. There's no defence of mistake in strict liability offences (Cundy v Le Cocq).
The Human Rights angle is interesting - in G, the Supreme Court confirmed that strict liability doesn't breach the presumption of innocence, despite seeming unfair to defendants.
Remember: Most strict liability offences are regulatory rather than 'true crimes' - but there are exceptions like B v DPP!

Murder remains a common law offence without statutory definition. Lord Coke's 17th-century definition still applies: 'unlawful killing of a reasonable person in being under the Queen's peace with malice aforethought.' Every element matters for your exam answers.
The actus reus requires killing a human being (not a foetus unless born alive), under the Queen's peace, and unlawfully. Self-defence can make killing lawful if reasonable force is used, judged by what the defendant believed (Beckford). Householders now get extra protection under s.43 Crime & Courts Act 2013.
Mens rea has two types: express malice (intention to kill) and implied malice (intention to cause GBH). This means you can be guilty of murder without intending to kill (Vickers). The normal rules on direct and oblique intention apply.
The mandatory life sentence creates problems, which is why we have partial defences like diminished responsibility and loss of control. Minimum terms range from 15 years to whole life depending on circumstances.
Critical Issue: You can be convicted of murder by only intending serious harm - many argue this is too wide!

Attempts cover situations where defendants try to commit crimes but fail. Section 1(1) Criminal Attempts Act 1981 requires intent to commit an offence plus an act 'more than merely preparatory' - this phrase is crucial for exam success.
The old common law tests (last act, proximity, Rubicon) still have persuasive value. Modern courts ask whether the defendant moved from planning to execution (Geddes) and whether they're trying to commit the full offence or just getting ready.
Key cases show the boundaries: Campbell , Geddes , but Jones and Boyle & Boyle .
The 'more than merely preparatory' test requires careful case-by-case analysis. Look for when defendants cross from preparation into actually trying to commit the crime.
Exam Tip: Always explain whether the defendant has moved from preparation to execution - this is the key distinction!




Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
This is the aqa exam board for triple highwe
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
sidra
@s1dra_h
Get ready to tackle A-level Criminal Law! This revision guide breaks down the essential concepts you need to know for your H418/01 exam, from understanding the basic building blocks of criminal liability to mastering complex murder and defence scenarios.

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By signing up you accept Terms of Service and Privacy Policy
Your Criminal Law exam makes up 33.3% of your total A-level - so it's crucial to get this right! The paper splits into two sections: Legal System (20 marks) and Criminal Law (60 marks), giving you 2 hours to show what you know.
Here's what you're facing: Section A needs one 8-mark question and one 12-mark question from your choices. Section B requires all three 20-mark questions, but you can choose between Part 1 or Part 2. That works out to roughly a mark per minute, so time management is key.
The marking uses three assessment objectives. AO1 tests your knowledge (8 marks), whilst AO2 checks if you can apply law to scenarios and AO3 evaluates your analysis skills (both worth 12 marks each). Essay questions focus on AO1 + AO3, while scenario questions combine AO1 + AO2.
Top Tip: Always cite cases and Acts of Parliament - and never write lists! Use continuous sentences and refer to scenario names.

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Think of actus reus as the physical side of crime - what actually happened. You'll find three types: voluntary acts (Hill v Baxter), failure to act (omissions), and state of affairs cases like Larsonneur where someone's guilty despite acting involuntarily.
Omissions are tricky because Britain doesn't have a 'Good Samaritan' law. However, you can be liable for failing to act in six situations: statutory duties, contractual duties (Pittwood), relationship duties (Gibbins & Proctor), voluntarily assumed duties (Stone & Dobinson), official positions (Dytham), and when you've started a chain of events (Miller).
Causation requires proving both factual and legal cause. Use the 'but for' test - would the victim still be alive 'but for' the defendant's actions? Remember the 'thin skull' rule from Blaue - you take your victim as you find them.
Medical treatment rarely breaks the chain of causation unless it's 'so potent' it makes the defendant's act insignificant (Cheshire). The victim's own actions won't break the chain unless they're 'so daft or unexpected' (Roberts).
Remember: The defendant's act only needs to be 'more than minimal' - it doesn't have to be the main cause!

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Mens rea examines what was going through the defendant's head when they committed the crime. Without it, you usually get an acquittal. The four levels are intention (highest), recklessness, negligence, and knowledge.
Intention comes in two flavours: direct (wanting the result) and oblique (foreseeing it as virtually certain). The journey from Moloney through Nedrick to Woollin shows how courts struggled with this concept. Today's test asks whether death or serious harm was a virtual certainty and whether the defendant realised this.
Recklessness uses a subjective test after G v R - did the defendant know there was a risk but take it anyway? It's sufficient for 'basic intent' crimes like assault and manslaughter. The old objective Caldwell test caused too many problems.
Special rules help when things go wrong: transferred malice (Latimer) covers when you hit the wrong person, while cases like Fagan show that actus reus and mens rea can coincide across a continuing series of acts.
Key Point: Foresight of consequences isn't intention itself - it's just evidence that might help prove intention!

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Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Strict liability offences don't require mens rea - you can be guilty even if you're completely blameless! These typically involve regulatory matters like food safety, building regulations, or selling age-restricted products.
When statutes aren't clear, courts apply the Gammon tests: start by presuming mens rea is required, check for mental state words in the Act, distinguish between 'true crimes' (imprisonment possible) and regulatory offences, consider how dangerous the activity is, and ask whether strict liability promotes higher safety standards.
Cases like Harrow LBC v Shah show the harsh reality - selling lottery tickets to someone underage made the defendants guilty despite taking reasonable precautions. There's no defence of mistake in strict liability offences (Cundy v Le Cocq).
The Human Rights angle is interesting - in G, the Supreme Court confirmed that strict liability doesn't breach the presumption of innocence, despite seeming unfair to defendants.
Remember: Most strict liability offences are regulatory rather than 'true crimes' - but there are exceptions like B v DPP!

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Murder remains a common law offence without statutory definition. Lord Coke's 17th-century definition still applies: 'unlawful killing of a reasonable person in being under the Queen's peace with malice aforethought.' Every element matters for your exam answers.
The actus reus requires killing a human being (not a foetus unless born alive), under the Queen's peace, and unlawfully. Self-defence can make killing lawful if reasonable force is used, judged by what the defendant believed (Beckford). Householders now get extra protection under s.43 Crime & Courts Act 2013.
Mens rea has two types: express malice (intention to kill) and implied malice (intention to cause GBH). This means you can be guilty of murder without intending to kill (Vickers). The normal rules on direct and oblique intention apply.
The mandatory life sentence creates problems, which is why we have partial defences like diminished responsibility and loss of control. Minimum terms range from 15 years to whole life depending on circumstances.
Critical Issue: You can be convicted of murder by only intending serious harm - many argue this is too wide!

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Attempts cover situations where defendants try to commit crimes but fail. Section 1(1) Criminal Attempts Act 1981 requires intent to commit an offence plus an act 'more than merely preparatory' - this phrase is crucial for exam success.
The old common law tests (last act, proximity, Rubicon) still have persuasive value. Modern courts ask whether the defendant moved from planning to execution (Geddes) and whether they're trying to commit the full offence or just getting ready.
Key cases show the boundaries: Campbell , Geddes , but Jones and Boyle & Boyle .
The 'more than merely preparatory' test requires careful case-by-case analysis. Look for when defendants cross from preparation into actually trying to commit the crime.
Exam Tip: Always explain whether the defendant has moved from preparation to execution - this is the key distinction!

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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This is the aqa exam board for triple highwe
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user