Some major cities:

    Birmingham/5/B

    Bristol/1/BS

    Cambridge/6/CB

    Dover/2/CT

    Exeter/1/EX

    Glasgow/8/G

    Hull/7/HU

    Ipswich/6/IP

    Kingston/7/HU

    Leicester/5/LE

    Lincoln/6/LN

    Liverpool/7/L

    London/3

    Manchester/7/M

    New Castle/9/NE

    Norwich/6/NR

    Oxford/5/OX

    Sheffield/7/S

    Southampton/2/SO

    Postalcodes:

    AB 9   E  3   LS 7   SL 2

    AL 6   EC 3   LU 5   SM 3

    B  5   EH 9   M  7   SN 1

    BA 1   EN 3   ME 2   SO 2

    BB 7   EX 1   MK 5   SP 2

    BD 7   FK 9   ML 8   SR 9

    BH 2   FY 7   N  3   SS 6

    BL 7   G  8   NE 9   ST 5

    BN 2   GL 5   NG 5   SW 3

    BR 3   GU 2   NN 5   SY 4

    BS 1   HA 3   NP 4   TA 1

    CA 8   HD 7   NR 6   TD 9

    CB 6   HG 7   NW 3   TF 5

    CF 4   HP 5   OL 7   TN 2

    CH 4   HR 4   OX 5   TQ 1

    CM 6   HU 7   PA 8   TR 1

    CO 6   HX 7   PA 9   TS 9

    CR 3   IG 3   PE 6   TW 3

    CT 2   IP 6   PH 9   UB 3

    CV 5   IV 9   PL 1   W  3

    CW 5   KA 8   PO 2   WA 7

    DA 3   KT 3   PR 7   WC 3

    DD 9   KW 9   RG 2   WD 3

    DE 5   KY 9   RH 2   WF 7

    DG 8   L  7   RM 3   WN 7

    DH 9   LA 8   S  7   WR 5

    DL 9   LD 4   SA 4   WS 5

    DN 7   LE 5   SE 3   WV 5

    DT 1   LL 4   SG 6   YO 7

    DY 5   LN 6   SK 7