Rich People - resident area - in London
Bayswater Road lancaster Gate Kensington Just Look at the Royal parks on a London Map and the rich live all around them
Chelsea
Knightsbridge
Kensington
Fulham
Mortlake
Richmond
St Johns Wood
Regents Park
Hampstead
Hampstead Garden Suburb
Weybridge (Surrey - just outside London)
David S gave a good answer. Interestingly, very rich areas can be adjacent to very poor areas. Both types are scattered all over London.
West and SW London...Chelsea, Mayfair,Fulham, Barnes etc etc .......LOTS rich even in places like Battersea now...They spread...