The London Plan has five sub regions, which were re-designated in 2008. From 2004 to 2008 the sub regions were called North, South, East, West and Central. Today, however, they have been changed to more accurately reflect the geographical boundaries and are now called South West London, North East London, North London, West London and South East London. The last is quite large, though less populated than some of the other sub regions. Some of the sub regions have more boroughs within their boundaries, but South East London comprises only five London boroughs - Southwark, Lewisham, Bromley, BExley and Greenwich. Within those five boroughs live about 1.3 million people. Interestingly, however, there are only 500,000 jobs in the sub region, meaning that many people commute out of these suburbs to work, probably closer to the city centre.
There are also a number of metropolitan centres and major centres, according to the London Plan that are located within South East London. The metropolitan centre is located at Bromley - there's just one - and the major centres can be found at Peckham, Woolwich, Catford, Eltham, Bexleyheath and Orpington. There are 28 postcode areas, ranging from SE1 to SE28. The whole South East London sub region lies to the south of the River Thames, which cuts east-west through Greater London. Woolwich is the borough that lies farthest east, while Camberwell and Brixton are on its western border with South West London.