The London Plan is the statutory spatial development strategy for the Greater London area in the United Kingdom that is written by the Mayor of London and published by the Greater London Authority. The regional planning document was first published in final form on 10 February 2004. In addition to minor alterations, it was substantially revised and republished in February 2008 and again in July 2011. The London Plan published in July 2011 is currently in effect and has 2031 as a formal end date. As of June 2012 minor alterations are being made to the plan in order to comply with the National Planning Policy Framework and other changes in national policy.
The plan identifies dozens of areas of opportunity, which are where the bulk of efforts will be concentrated, with an aim at reducing social deprivation and creating sustainable development. The opportunity areas will be able to accommodate around 5,000 jobs each or about 2,500 homes, or a mixture of the two. The opportunity areas will mostly be town centres as opposed to suburban developments in the boroughs, although those are mentioned as important in terms of job growth and quality of life.
Further information: List of sub regions used in the London Plan
For the purposes of the plan, London is divided into five sub regions. From 2004 to 2008 the sub regions were initially the same as the Learning and Skills Council areas set up in 1999. Within this scheme there was a separate Central sub region and four others around it. The London part of the Thames Gateway zone was entirely contained within the East London sub region. The 2004—2008 sub regions each had a Sub-Regional Development Framework. The sub regions were revised in February 2008 as part of the Further Alterations to the London Plan. These sub regions each radiated from the centre to combine inner and outer London boroughs. The 2008—2011 sub regions, each had its own Sub Regional Implementation Framework. In 2011 the sub regions were revised again, reintroducing a smaller Central sub region and returning all of the London part of the Thames Gateway to be within the East sub region. The 2011 sub regions are to be used for statutory monitoring, engagement and resource allocation. Throughout these revisions has been a separately defined Central Activities Zone which includes areas with a very high concentration of metropolitan activities.
The Wikipedia page is  and contains a list of activity centres.