Section 106

that the marriage has not been consummated owing to the incapacity of either party to consummate it;

that the marriage has not been consummated owing to the wilful refusal of the defendant to consummate it;

that either party to the marriage did not validly consent to it, whether in consequence of duress, mistake, mental disorder or otherwise;

that at the time of the marriage either party, though capable of giving a valid consent, was suffering (whether continuously or intermittently) from mental disorder within the meaning of the Mental Health (Care and Treatment) Act 2008 of such a kind or to such an extent as to be unfit for marriage;

that at the time of the marriage the defendant was suffering from venereal disease in a communicable form;

that at the time of the marriage the defendant was pregnant by some person other than the plaintiff.