Introduction This Practice Note is part of our LLB Contract Law suite, geared specifically towards students. In contract law, a vitiating factor is something that spoils or impairs the legal validity of the consent required to form a valid contract. One vitiating factor is misrepresentation, in which one party makes a statement to another which is not true. This Practice Note explains misrepresentation as a vitiating factor in English contract law, focusing on how false pre-contractual statements undermine genuine consent and render contracts voidable (rather than void). It sets out the elements of actionable misrepresentation (a false statement of fact or law, inducement and attribution), distinguishes between fraudulent, negligent and innocent misrepresentation, and analyses the leading cases and statutory framework under the Misrepresentation Act 1967. The Practice Note gives particular attention to remedies, especially rescission and damages, and the equitable bars to rescission (affirmation, lapse of time, impossibility of restitution, third-party rights and judicial discretion). Throughout, it integrates key judicial reasoning, policy considerations and exam-focused guidance, showing how modern case law balances fairness to the misled party with certainty