East Central
EC1A, EC1M, EC1N, EC1P, EC1R, EC1V, EC1Y - Barbican, Clerkenwell, Finsbury
EC2A, EC2M, EC2N, EC2P, EC2R, EC2V, EC2Y - Moorgate, Liverpool Street
EC3A, EC3M, EC3N, EC3P, EC3R, EC3V - Aldgate, Monument, Tower Hill
EC4A, EC3M, EC4N, EC4P, EC4R, EC4V, EC4Y - Fleet Street, St. Paul’s
West Central
WC1A, WC1B, WC1E, WC1H, WC1N, WC1R, WC1V, WC1X - Bloomsbury, Gray’s Inn
WC2A, WC2B, WC2E, WC2H, WC2N, WC2R - Covent Garden, Holborn, Strand
North
N1 - Barnsbury, Canonbury, Islington; N2 - East Finchley; N3 - Finchley Central; N4 - Finsbury Park, Manor House; N5 - Highbury; N6 - Highgate; N7 - Holloway; N8 - Crouch End, Hornsey; N9 - Upper Edmonton; N10 - Muswell Hill; N11 - Friern Barnet, New Southgate; N12 - North Finchley, Woodside Park; N13 - Palmers Green; N14 - Southgate; N15 - Severn Sisters; N16 - Stamford Hill, Stoke Newington; N17 - Tottenham; N17 - Upper Edmonton; N19 - Archway, Tufnell Park; N20 - Totteridge, Whetstone; N21 - Winchmore Hill; N22 - Alexandra Palace, Wood Green
North West
NW1 - Camden Town, Regent’s Park; NW2 - Cricklewood, Neasden; NW3 - Hampstead, Swiss Cottage; NW4 - Brent Cross, Hendon; NW5 - Kentish Town; NW6 - Kilburn, Queens Park, West Hampstead; NW7 - Mill Hill; NW8 - St. John’s Wood; NW9 - Colindale, Kingsbury; NW10 - Harlesden, Kensal Green, Willesden; NW11 - Golders Green, Hampstead Garden Suburb
South
SE10 - Greenwich; SW1 - Belgravia, Pimlico, Westminster; SW3 - Brompton, Chelsea; SW5 - Earls Court; SW6 - Fulham, Parson’s Green; SW7 - South Kensington
East
E1 - Mile End, Stepney, Whitechapel, E2 - Bethnal Green, Shoreditch; E3 - Bow, Bromley-By-Bow; E4 - Chingford, Highams Park; E5 - Clapton; E6 - East Ham; E7 - Forest Gate, Upton Park; E8 Hackney, Dalston; E9 - Hackney, Homerton; E10 - Leyton; E11 - Leytonstone; E12 - Manor Park; E13 - Plaistow; E14 - Isle of Dogs, Millwall, Poplar; E15 - Stratford, West Ham; E16 - Canning Town, North Woolwich; E17 - Walthamstow; E18 - South Woodford
West
W1 - Marylebone, Mayfair, Soho; W2 - Bayswater, Paddington; W3 - Acton; W4 - Chiswick; W5 - Ealing; W6 - Hammersmith; W7 - Hanwell; W8 - Kensington; W9 - Maida Vale, Warwick Avenue; W10 - Ladbroke Grove, North Kensington; W11 - Holland Park, Notting Hill; W12 - Shepherd’s Bush; W13 - West Ealing; W14 - West Kensington
Outer London
EN - Enfield; HA - Harrow; IG - Ilford; RM - Romford; SM - Sutton; TW - Twickenham; UB - Uxbridge; WD - Watford; Stevenage; Letchworth; Hitchin; Welwyn Garden City; Potters Bar; Hadley Wood; Brookmans Park.