A
AUD
Audley End
B
BIS
Bishop's Stortford
BMD
Brimsdown
BXB
Broxbourne
C
CBG
Cambridge
CMB
Cambridge North
CHN
Chesunt
E
ENL
Enfield Lock
ELY
Ely
G
GRC
Great Chesterford
H
HAC
Hackney Downs
HWM
Harlow Mill
HWN
Harlow Town
HFE
Hertford East
L
LEB
Lea Bridge
LST
Liverpool Street
M
MRW
Meridian Water
N
NWE
Newport
NUM
Nothumberland Park
P
PON
Ponders End
R
RYN
Roydon
RYH
Rye House
S
SMT
St. Margarets
SAW
Sawbridgeworth
SED
Shelford
SSD
Stansted Airport
SST
Stansted Mountfitchet
SRA
Stratford
W
WLC
Waltham Cross
WAR
Ware
WLF
Whittlesford Parkway