From the Diocese of London website:
The ‘London Plan’ is a declaration made by the Bishop of London, all the Area Bishops and the Bishop of Fulham. It relates to the Priests (Ordination of Women) Measure 1993, the Episcopal Ministry Act of Synod 1993 and the Code of Practice 1994.
The London Plan sets out how certain parts of the Bishop of London’s authority – such as to ordain and license clergy – may be delegated to the other bishops of the Diocese of London.
Crucially it allows parochial church councils to petition the Bishop of London to allow pastoral care for that parish to be exercised by a bishop other than the Area Bishop, usually the Bishop of Fulham.
The plan is available for download: The London Plan.
This is a revised version of the Plan and is dated 1 July 2013.