Northern Scotland
KW, IV, PH, AB, DD, HS

Southern Scotland
DG, EH, FK, G1, G2, G3, G4, G5, G6, G7, G8, G9, KA, KY, ML, PA, TD

North West England
BB, BD, BL, BT, CA, CH, CW, FY, HD, HX, (IM) LA, L1, L2, L3, L4, L5, L6, L7, L8, L9, M1, M2, M3, M4, M5, M6, M7, M8, M9, OL, PR, SK, WA, WN

North East England
DH, DL, DN, HG, HU, LS, NE, S1, S2, S3, S4, S5, S6, S7, S8, S9, SR, TS, WF, YO

Wales
CF, LD, LL, NP, SA, SY

Heart of England
B1, B2, B3, B4, B5, B6, B7, B8, B9, CV, DE, DY, GL, HR, LE, MK, NG, NN, OX, ST, TF, WR, WS, WV

Eastern England
CB, CO, IP, LN, NR, PE

South West England
BS, BA, DT, EX, PL, TA, TQ, TR

Southern England
AL, BH, BN CM, CT, GU, HP, JE, LU, ME , PO, RG, RH, SG, SL, SN, SO, SP, SS, TN, ,

London
BR, CR, DA, E1, E2, E3, E4, E5, E6, E7, E8, E9, EC EN, HA, IG, KT, N1, N2, N3, N4, N5, N6, N7, N8, N9, NW, RM, SM, SE, SW, TW, UB, W1, W2, W3, W4, W5, W6, W7, W8, W9, WC, WD