THFC6061
Paul Robinson
I don't get the Middlesex thing, it's not at all insulting.
Strictly speaking, there are no real London clubs, as the traditional areas (the City Square Mile and the City of Westminster) never had any football clubs located there.
Most of the London League clubs were in Middlesex, which took-up most of the area north of the Thames back in Victorian times and was the richest county in the United Kingdom:
Middlesex
Chelsea
Fulham
Tottenham Hotspur
Queens Park Rangers
Brentford
Arsenal (after 1913)
Hertfordshire
Watford
Barnet
Essex
West Ham United
Colchester United
Southend United
Leyton Orient
Thames Association
Dagenham & Redbridge
Kent
Woolwich Arsenal (to 1913)
Charlton Athletic
Gillingham
Maidstone United
Surrey
Crystal Palace
Millwall (originally based in Middlesex)