Barnet feature at #9 with Ingram Avenue where the average cost of a house is £4,323,591 and #14 with Winnington Road where the average property price is £3,805,664. Kensington's Kensington Square tops the poll where the average price is £5,534,480!!!
So, a little beyond my mortgage capability then. Well, currently at least :p
Chelsea 'Dominates House Prices' (BBC Online News; Friday 16th February 2007)