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What is the Double Jeopardy Law? Ann Ming and Lillian's Law Changes in the UK

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Demetra

23/08/2025

Criminology

AC2.1 Ann Ming's and Lillian's Law Campaigns

1,665

23 Aug 2025

1 page

What is the Double Jeopardy Law? Ann Ming and Lillian's Law Changes in the UK

user profile picture

Demetra

@demetra_21

Ann Ming's fight against double jeopardy and the creation of... Show more

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Ann Ming's Double Jeopardy Law
Double Jeopardy Law: a defence that prevents prosecution of a defendant
more than once for the same offence,

Ann Ming's Double Jeopardy Law Campaign and Lillian's Law: Transforming UK Legal Landscape

This page discusses two significant legal changes in the UK: the modification of the double jeopardy law and the introduction of Lillian's Law for roadside drug testing. Both cases illustrate how personal tragedies can lead to substantial legal reforms.

Ann Ming's Fight Against Double Jeopardy

The double jeopardy law, an 800-year-old legal principle, prevented the prosecution of a defendant more than once for the same offense after a not guilty verdict. Ann Ming's campaign to change the double jeopardy law began after the tragic murder of her daughter, Julie Hogg, in 1989.

Definition: Double jeopardy is a legal defense that protects individuals from being tried twice for the same crime after an acquittal.

Billy Dunlop, the accused in Julie Hogg's murder, was tried twice in 1991 but not convicted due to inconclusive evidence and jury indecision. This outcome sparked Ann Ming's determination to reform the law.

Example: In Julie Hogg's case, the decomposed state of the body made it difficult for pathologists to determine the cause of death, leading to Dunlop's acquittal.

Ann Ming's campaign methods included:

  1. Writing to the Home Secretary to review the law's basis
  2. Giving a speech in the House of Lords
  3. Collaborating with the Northern Echo press for media coverage

Highlight: The 2003 Criminal Justice Act abolished the double jeopardy law for 30 serious offenses, coming into effect in 2005 with retrospective application.

This change allowed for the retrial and eventual conviction of Billy Dunlop, making him the first person convicted under the new law.

Lillian's Law: Roadside Drug Testing

Lillian's Law emerged from another tragic incident in 2010 when Lillian Grove was fatally hit by a motorist who had been smoking cannabis.

Vocabulary: Drugalysers are devices used by police to conduct roadside drug tests on drivers.

The campaign for Lillian's Law focused on:

  1. Introducing police roadside drug testing in the UK
  2. Changing laws to prosecute drivers exceeding new drug level limits

The campaign gained significant support:

  • Over 20,000 signatures collected by the Advertiser
  • Backing from local MP Gavin Barwell of Croydon
  • Personal support from Prime Minister David Cameron

Quote: "Lillian's Law came to force in 2014. Drivers can now be prosecuted if they are found exceeding new drug level limits."

This law empowered police to use drugalysers for roadside testing, significantly enhancing road safety measures in the UK.

Both Ann Ming's campaign and Lillian's Law demonstrate how persistent advocacy, media engagement, and political support can lead to meaningful legal reforms, improving justice and public safety in the UK.



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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

 

Criminology

1,665

23 Aug 2025

1 page

What is the Double Jeopardy Law? Ann Ming and Lillian's Law Changes in the UK

user profile picture

Demetra

@demetra_21

Ann Ming's fight against double jeopardy and the creation of Lillian's Law showcase how determined individuals can change longstanding legal practices to pursue justice and public safety.

  • Ann Ming's campaign led to the abolition of the double jeopardy lawfor... Show more

Ann Ming's Double Jeopardy Law
Double Jeopardy Law: a defence that prevents prosecution of a defendant
more than once for the same offence,

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Ann Ming's Double Jeopardy Law Campaign and Lillian's Law: Transforming UK Legal Landscape

This page discusses two significant legal changes in the UK: the modification of the double jeopardy law and the introduction of Lillian's Law for roadside drug testing. Both cases illustrate how personal tragedies can lead to substantial legal reforms.

Ann Ming's Fight Against Double Jeopardy

The double jeopardy law, an 800-year-old legal principle, prevented the prosecution of a defendant more than once for the same offense after a not guilty verdict. Ann Ming's campaign to change the double jeopardy law began after the tragic murder of her daughter, Julie Hogg, in 1989.

Definition: Double jeopardy is a legal defense that protects individuals from being tried twice for the same crime after an acquittal.

Billy Dunlop, the accused in Julie Hogg's murder, was tried twice in 1991 but not convicted due to inconclusive evidence and jury indecision. This outcome sparked Ann Ming's determination to reform the law.

Example: In Julie Hogg's case, the decomposed state of the body made it difficult for pathologists to determine the cause of death, leading to Dunlop's acquittal.

Ann Ming's campaign methods included:

  1. Writing to the Home Secretary to review the law's basis
  2. Giving a speech in the House of Lords
  3. Collaborating with the Northern Echo press for media coverage

Highlight: The 2003 Criminal Justice Act abolished the double jeopardy law for 30 serious offenses, coming into effect in 2005 with retrospective application.

This change allowed for the retrial and eventual conviction of Billy Dunlop, making him the first person convicted under the new law.

Lillian's Law: Roadside Drug Testing

Lillian's Law emerged from another tragic incident in 2010 when Lillian Grove was fatally hit by a motorist who had been smoking cannabis.

Vocabulary: Drugalysers are devices used by police to conduct roadside drug tests on drivers.

The campaign for Lillian's Law focused on:

  1. Introducing police roadside drug testing in the UK
  2. Changing laws to prosecute drivers exceeding new drug level limits

The campaign gained significant support:

  • Over 20,000 signatures collected by the Advertiser
  • Backing from local MP Gavin Barwell of Croydon
  • Personal support from Prime Minister David Cameron

Quote: "Lillian's Law came to force in 2014. Drivers can now be prosecuted if they are found exceeding new drug level limits."

This law empowered police to use drugalysers for roadside testing, significantly enhancing road safety measures in the UK.

Both Ann Ming's campaign and Lillian's Law demonstrate how persistent advocacy, media engagement, and political support can lead to meaningful legal reforms, improving justice and public safety in the UK.

We thought you’d never ask...

What is the Knowunity AI companion?

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.

Where can I download the Knowunity app?

You can download the app from Google Play Store and Apple App Store.

Is Knowunity really free of charge?

That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.9/5

App Store

4.8/5

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