Sch 4 para 11
The validity of any proceedings of the Authority shall not be affected— (a) by any defect in the appointment— (i) of the chairman; (ii) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (iii) of any other member, or (b) by any vacancy— (i) in the office of chairman; (ii) among the other members; . . . (iii) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .