Where two people have registered as civil partners of each other in Northern Ireland, it is not necessary in support of the civil partnership to give any proof—
(a)that any person whose consent to the civil partnership was required by section 145 (parental etc. consent) had given his consent;
(b)that the registrar was properly appointed under section 152;
and no evidence is to be given to prove the contrary in any proceedings touching the validity of the civil partnership.