For the purposes of sections 41 and 42 of this Act, development shall be taken to be begun on the earliest date on which any specified operation comprised in the development begins to be carried out.
In subsection (1) of this section "specified operation" means any of the following, that is to say—
In subsection (2) (e) of this section " material development " means any development other than—
and in this subsection "general development order" means a development order made as a general order applicable (subject to such exceptions as may be specified therein) to all land in England and Wales.
The authority referred to in sections 41(1)(b) and 42(4) of this Act is the local planning authority or the Secretary of State, in the case of planning permission granted by them, and in the case of planning permission under section 40 of this Act is the department on whose direction planning permission is deemed to be granted.
For the purposes of section 42 of this Act, a reserved matter shall be treated as finally approved when an application for approval is granted or, in a case where the application is made to the local planning authority and there is an appeal to the Secretary of State against the authority's decision on the application and the Secretary of State grants the approval, on the date of the determination of the appeal.
Where a local planning authority grant planning permission, the fact that any of the conditions of the permission are required by the provisions of sections 41 or 42 of this Act to be imposed, or are deemed by those provisions to be imposed, shall not prevent the conditions being the subject of an appeal under section 36 of this Act against the decision of the authority.
In the case of planning permission (whether outline or other) having conditions attached to it by or under section 41 or 42 of this Act—