1(1)Subject to paragraphs 2 and 3—
(a)the Greater London Development Plan,
(b)any local plan; and
(c)any old development plan,
which immediately before the commencement of this Act was in force in the area of a local planning authority in Greater London (or in that and other areas) shall continue in force in respect of the area of that authority until a unitary development plan for that area becomes operative under Chapter I of Part II of this Act or, where parts of a unitary development plan become operative on different dates, until every part of it has become operative.
(2)A plan which continues in force by virtue of this paragraph shall, while it continues in force, be treated for the purposes of this Act, any other enactment relating to town and country planning, the M1Land Compensation Act 1961 and the M2Highways Act 1980 as being, or being comprised in, the development plan in respect of the area in question.
(3)In this paragraph “old development plan” has the same meaning as in paragraph 1 of Part I of this Schedule.