The Secretary of State may by regulations prescribe requirements relating to the size and composition of a committee or sub-committee by which such relevant planning functions as are prescribed are to be discharged.
A relevant local planning authority may not arrange for a relevant planning function to be discharged by a committee or sub-committee of the authority which fails to satisfy a requirement imposed by regulations under this section in relation to the discharge of that function.
If a committee or sub-committee discharging a relevant planning function fails to satisfy such a requirement, paragraph 43 of Schedule 12 to the 1972 Act (validity of proceedings) does not apply in relation to the failure.