1:-

(1) Subject to the provisions of this Part of this Act, if a person agrees with any other person or persons that a course of conduct shall be pursued which, if the agreement is carried out in accordance with their intentions, either . . .

(a) will necessarily amount to or involve the commission of any offence or offences by one or more of the parties to the agreement, or

(b) would do so but for the existence of facts which render the commission of the offence or any of the offences impossible,

he is guilty of conspiracy to commit the offence or offences in question.

(2) Where liability for any offence may be incurred without knowledge on the part of the person committing it of any particular fact or circumstance necessary for the commission of an offence, a person shall nevertheless not be guilty of conspiracy to commit that offence by virtue of subsection (1) unless he and at least one other party to the agreement intend or know that that fact or circumstance shall or will exist at the time when the conduct constituting the offence is to take place.

2:--

A person shall not by virtue of section 1 above be guilty of conspiracy to commit any offence or offences if the only other person or persons with whom he agrees are (both initially and at all times during the currency of the agreement) persons of any one or more of the following descriptions, that is to say - his spouse;. . . .