6.—(1) The Authority may establish ethics committees to act—
(a)for the entire United Kingdom or for such areas of the United Kingdom; and
(b)in relation to such descriptions or classes of clinical trials,
as the Authority consider appropriate.
(2) The Authority may—
(a)vary the area for which any committee they have established acts or, as the case may be, the descriptions or classes of clinical trials in relation to which such a committee acts; and
(b)abolish any such committee.