A member of a group under police surveillance who had entered into a sexual relationship with an undercover police officer was unable to establish that her lack of knowledge as to the officer’s true identity vitiated her consent to sexual relations within the meaning of the Sexual Offences Act 2003 s.74. There was no justification for extending the common law position as contended for by the claimant, namely that the matter to which the deception related had to be sufficiently serious in objective terms as to be capable of being regarded as relevant to a woman’s decision-making and that, subjectively, the deception went to a matter which the woman regarded as critical or fundamental to her decision-making.