Which delivery areas are classed as long distance?
AB, AL, B, BA, BB, BH, BL, BS, CA, CB, CF, CH, CM, CO, CV, CW, DD, DG, DT, DY, EH, EN, EX, FK, FY, G, GL, HP, HR, IP, IV, KA, KW, KY, L, LA, LD, LL, LU, M, MK, ML, NG31, NG32, NG34, NN, NP, NR, OL, OX, PA, PE, PH, PL, PO, PR, SA, SG, SK, SN, SO, SP, SS, ST, SY, TA, TD, TF, TQ, TR, WA, WD, WN, WR, WS, WV