Piccadilly Signal Codes
PM
Cockfosters
PK
Oakwood
PJ
Arnos Grove
PG
Wood Green
VK
Finsbury Park
VK
Finsbury Park
L
Kings Cross
PD
Holborn
PB
Green Park Hyde Park Corner
WD
Barons Court Hammersmith
WL
Acton Town
WR
Northfields
WS
Boston Manor
WT
Hounslow Central
WW
Hatton Cross
WY
Heathrow 123
WZ
Heathrow 5
WM
Ealing Common
WV
South Harrow
MP
Raynors Lane
MU
Ruislip
MW
Uxbridge
WK
Turnham Green
WC
West Kensington
WP
Ealing Broadway