I understand maintenance varies if I am studying within London. What areas do you consider as within London?

The UKBA consider London to be the following boroughs; Camden, City of London, Hackney, Hammersmith and Fulham, Haringey, Islington, Kensington and Chelsea, Lambeth, Lewisham, Newham, Southwark, Tower Hamlets, Wandsworth, and Westminster.