AL1, AL2, AL3, AL4 ST. ALBANS Hertfordshire
AL5 HARPENDEN Hertfordshire
AL6, AL7shared WELWYN Hertfordshire
AL7,shared AL8 WELWYN GARDEN CITY Hertfordshire
AL9, HATFIELD Hertfordshire
AL10
CB1, CB2, CB3, CB4, CB5, CAMBRIDGE Cambridgeshire
CB21, CB22, CB23, CB24, CB25
CB6, CB7 ELY Cambridgeshire
CB8 NEWMARKET Suffolk
CB9 HAVERHILL Suffolk
CM1, CM2 CM3 Chelmsford Essex
CM4 Ingatestone Essex
CM5 Ongar Essex
CM6, CM7 Dunmow Essex
CM7 CM77 Braintree Essex
CM8 Witham Essex
CB10, CB11 SAFFRON WALDEN Essex
CM13, CM14, CM15 BRENTWOOD Essex
CM16 EPPING Essex
CM17, CM18, CM19, HARLOW Essex
CM20
CM21 SAWBRIDGEWORTH Hertfordshire
CM22, CM23 BISHOP'S STORTFORD Hertfordshire
CM24 STANSTED Essex
CO1,CO2,CO3,CO4,CO6 COLCHESTER ESSEX
CO8 BURES Essex
CO9 Halstead Essex
CO10 SUDBURY Essex
EN4, EN5 BARNET Hertfordshire
EN6 POTTERS BAR Hertfordshire
EN7, EN8, WALTHAM CROSS Hertfordshire
EN77
EN9 WALTHAM ABBEY Essex
EN10, EN11 BROXBOURNE Hertfordshire
EN11 HODDESDON Hertfordshire
HP1, HP2, HP3 HEMEL HEMPSTEAD Hertfordshire
HP4 BERKHAMSTED Hertfordshire
HP5 CHESHAM Buckinghamshire
IP22, DISS Norfolk
IP24,  THETFORD Norfolk
IP27 BRANDON Suffolk
IP28, IP29, BURY ST. EDMUNDS Suffolk
IP30, IP31, IP32, IP33
LU1, LU2, LU3, LU4 LUTON Bedfordshire
LU5, DUNSTABLE Bedfordshire
MK4 MILTON KEYNES Buckinghamshire
MK40, MK41, MK42, MK44,MK45 BEDFORD Bedfordshire
PE1, PE2, PE3, PE4, PE5, PE6, PE7,  PETERBOROUGH Cambridgeshire
PE15 MARCH Cambridgeshire
PE16 CHATTERIS Cambridgeshire
PE19 ST. NEOTS Cambridgeshire
PE26, PE28, PE29 HUNTINGDON Cambridgeshire
PE27 ST. IVES Cambridgeshire
SG1, SG2 STEVENAGE Hertfordshire
SG3 KNEBWORTH Hertfordshire
SG4, SG5, SG6 HITCHIN Hertfordshire
SG6 LETCHWORTH GARDEN CITY Hertfordshire
SG7 BALDOCK Hertfordshire
SG8 ROYSTON Hertfordshire
SG9 BUNTINGFORD Hertfordshire
SG10 MUCH HADHAM Hertfordshire
SG11, SG12 WARE Hertfordshire
SG13, SG14 HERTFORD Hertfordshire
SG15 ARLESEY Bedfordshire
SG16 HENLOW Bedfordshire
SG17 SHEFFORD Bedfordshire
SG18 BIGGLESWADE Bedfordshire
SG19 SANDY Bedfordshire
WD3 RICKMANSWORTH Hertfordshire
WD4, WD18 KINGS LANGLEY Hertfordshire
WD5 ABBOTS LANGLEY Hertfordshire
WD6 BOREHAMWOOD Hertfordshire
WD7 RADLETT Hertfordshire
WD17, WD18,WD19, WATFORD Hertfordshire
WD24, WD25,
WD99
WD23 BUSHEY Hertfordshire