R v Saik [2006] UKHL 18

Saik operated a London currency-exchange business and converted substantial sums supplied by others. He was charged with conspiracy to convert the proceeds of drug trafficking or other criminal conduct. He pleaded guilty on the express basis that he suspected the money was criminal proceeds but did not know that it was. The prosecution accepted that qualified plea. The appeal asked whether the admitted suspicion, relevant to the substantive money-laundering offence then in force, was enough for statutory conspiracy. The House of Lords therefore considered both the conspiracy provisions and the legal effect of the accepted basis of plea.

Could a conspiracy conviction stand on an accepted plea admitting only suspicion about criminal provenance, when section 1(2) required intention or knowledge concerning that circumstance?

The House of Lords allowed the appeal and set aside the conviction. Section 1(2) of the Criminal Law Act 1977 required the relevant intention or knowledge about the property being criminal proceeds. The lesser suspicion threshold in the substantive offence did not suffice for that element of conspiracy. The prosecution could not reinterpret the accepted qualified plea as an admission of knowledge or use an evidential inference inconsistent with its express basis. The court also distinguished agreements concerning property to be identified in the future, where the required intention concerns its intended criminal provenance. It did not hold that conspiracy requires knowledge of every detail of the underlying crime.

Statutory conspiracy has its own mental requirements. Under section 1(2), intention or knowledge concerning a necessary fact or circumstance cannot be replaced by suspicion merely because suspicion suffices for the substantive offence. Saik's accepted plea on a suspicion-only basis could not support the conspiracy conviction.

Saik is an essential warning against assuming that an agreement plus the substantive offence's mens rea always establishes conspiracy. The relevant circumstance here was the criminal provenance of the property. It also illustrates the limits imposed by an accepted basis of plea: facts necessary for conviction cannot simply be inferred contrary to that basis. The underlying laundering provision has been superseded, so distinguish its historical wording from current offences while retaining the statutory conspiracy analysis.