The members appointed under paragraph 1(1)(a) and (b) constitute a committee of the Office to be known as the Budget Responsibility Committee.

The members appointed under paragraph 1(1)(c) constitute a committee of the Office to be known as the Non-executive Committee.

The Office may establish other committees.

A committee established by the Office may establish sub-committees.

A committee or sub-committee established under this paragraph may consist of or include persons who are neither members of the Office nor members of its staff.

Appointment as a member of such a committee or sub-committee of a person who is neither a member of the Office nor a member of its staff is to be on such terms as to remuneration and other matters as the Office may, with the approval of the Treasury, determine.