Types and Requirements of Misrepresentation
Not every false statement counts as misrepresentation - it must be a statement of material fact, not just opinion. However, if someone with authority or expertise gives an opinion, it might still count.
The statement must also have induced the other party to enter the contract. In Attwood v Small, there was no misrepresentation because the buyer relied on their own surveyor's report, not the seller's false statement.
There are three types of misrepresentation under the Misrepresentation Act 1967: innocent (genuinely believed on reasonable grounds), negligent (no good reason to believe it was true), and fraudulent (knew it was false).
The type affects your remedies. Innocent misrepresentation gets you rescission OR damages. Negligent and fraudulent misrepresentation can get you rescission AND/OR damages, with fraudulent offering the strongest protection.
Pro Tip: Consumer Protection Regulations 2014 give extra protection against misleading information in consumer contracts!