Total value of mortgages worth 4.5x the borrower's earnings by postcode (£m):
Wandsworth (SW18) 232
Battersea (SW11) 198
Wimbledon (SW19) 185
Fulham (SW6) 170
Tooting (SW17) 164
Walthamstow (E17) 151
Chelsea (SW3) 142
Hapstead (NW3) 122
Islington (N1) 118
Kilburn (NW6) 116
Balham (SW12) 116
Streatham (SW16) 115
Maidenhead (SL6) 112
Putney (SW15) 110
Chiswick (W4) 107
St John's Wood (NW8) 107
Croydon (CR0) 102
Belgravia (SW1X) 94
Notting Hill (NW11) 91