Reduce the list. Postcodes starting with:

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Postcodes (341 items):
B1 (1)
B10 (1)
B11 (1)
B12 (1)
B13 (2)
B14 (1)
B15 (2)
B16 (1)
B17 (1)
B18 (1)
B19 (1)
B2 (1)
B20 (1)
B21 (1)
B23 (2)
B24 (2)
B25 (2)
B26 (3)
B27 (1)
B28 (1)
B29 (2)
B3 (1)
B30 (3)
B31 (2)
B32 (2)
B33 (1)
B34 (1)
B35 (1)
B36 (1)
B37 (1)
B38 (2)
B4 (1)
B40 (1)
B42 (1)
B43 (2)
B44 (2)
B45 (5)
B46 (6)
B47 (2)
B48 (5)
B49 (17)
B5 (1)
B50 (3)
B6 (1)
B60 (11)
B61 (8)
B62 (3)
B63 (3)
B64 (1)
B65 (2)
B66 (1)
B67 (1)
B68 (1)
B69 (1)
B7 (1)
B70 (1)
B71 (1)
B72 (1)
B73 (1)
B74 (4)
B75 (3)
B76 (6)
B77 (6)
B78 (9)
B79 (16)
B8 (2)
B80 (5)
B9 (1)
B90 (3)
B91 (2)
B92 (6)
B93 (6)
B94 (7)
B95 (10)
B96 (8)
B97 (8)
B98 (3)
B99 (1)
BA1 (13)
BA10 (7)
BA11 (20)
BA12 (38)
BA13 (9)
BA14 (15)
BA15 (6)
BA16 (3)
BA2 (23)
BA20 (1)
BA21 (3)
BA22 (35)
BA3 (39)
BA4 (30)
BA5 (21)
BA6 (12)
BA7 (5)
BA8 (9)
BA9 (14)
BB1 (6)
BB10 (8)
BB11 (2)
BB12 (8)
BB18 (1)
BB2 (7)
BB3 (6)
BB4 (10)
BB5 (8)
BB6 (2)
BB7 (35)
BB8 (10)
BB9 (5)
BB94 (1)
BD1 (1)
BD10 (1)
BD11 (3)
BD12 (3)
BD13 (5)
BD14 (1)
BD15 (3)
BD16 (3)
BD17 (1)
BD18 (1)
BD19 (2)
BD2 (1)
BD20 (12)
BD21 (2)
BD22 (8)
BD23 (72)
BD24 (14)
BD3 (1)
BD4 (4)
BD5 (1)
BD6 (2)
BD7 (1)
BD8 (1)
BD9 (1)
BD97 (1)
BD98 (1)
BD99 (1)
BH1 (1)
BH10 (1)
BH11 (2)
BH12 (3)
BH13 (3)
BH14 (2)
BH15 (2)
BH16 (5)
BH17 (1)
BH18 (1)
BH19 (7)
BH2 (1)
BH20 (29)
BH21 (39)
BH22 (7)
BH23 (15)
BH24 (18)
BH25 (5)
BH3 (1)
BH31 (2)
BH4 (1)
BH5 (2)
BH6 (2)
BH7 (1)
BH8 (1)
BH9 (1)
BL0 (4)
BL1 (3)
BL11 (1)
BL2 (3)
BL3 (2)
BL4 (2)
BL5 (2)
BL6 (5)
BL7 (6)
BL78 (1)
BL8 (2)
BL9 (6)
BN1 (6)
BN10 (2)
BN11 (2)
BN12 (2)
BN13 (5)
BN14 (4)
BN15 (4)
BN16 (5)
BN17 (5)
BN18 (22)
BN2 (8)
BN20 (5)
BN21 (1)
BN22 (1)
BN23 (2)
BN24 (6)
BN25 (4)
BN26 (11)
BN27 (19)
BN3 (4)
BN41 (1)
BN42 (1)
BN43 (2)
BN44 (6)
BN45 (2)
BN5 (8)
BN50 (1)
BN51 (1)
BN52 (1)
BN6 (10)
BN7 (11)
BN8 (23)
BN88 (1)
BN9 (5)
BN99 (2)
BR1 (2)
BR2 (4)
BR3 (2)
BR4 (1)
BR5 (2)
BR6 (10)
BR7 (2)
BR8 (3)
BS0 (1)
BS1 (1)
BS10 (3)
BS11 (2)
BS13 (1)
BS14 (1)
BS15 (1)
BS16 (7)
BS2 (1)
BS20 (10)
BS21 (5)
BS22 (7)
BS23 (2)
BS24 (10)
BS25 (5)
BS26 (13)
BS27 (4)
BS28 (7)
BS29 (1)
BS3 (1)
BS30 (11)
BS31 (1)
BS32 (1)
BS34 (1)
BS35 (1)
BS36 (3)
BS37 (16)
BS39 (1)
BS4 (2)
BS40 (1)
BS41 (1)
BS48 (1)
BS49 (1)
BS5 (1)
BS6 (3)
BS7 (2)
BS8 (5)
BS80 (2)
BS9 (1)
BS98 (1)
BS99 (1)
BT1 (1)
BT10 (2)
BT11 (3)
BT12 (5)
BT13 (9)
BT14 (4)
BT15 (3)
BT16 (2)
BT17 (5)
BT18 (2)
BT19 (4)
BT2 (2)
BT20 (1)
BT21 (1)
BT22 (11)
BT23 (1)
BT24 (3)
BT25 (6)
BT26 (1)
BT27 (7)
BT28 (4)
BT29 (7)
BT3 (3)
BT30 (15)
BT31 (2)
BT32 (9)
BT33 (3)
BT34 (12)
BT35 (7)
BT36 (3)
BT37 (1)
BT38 (5)
BT39 (6)
BT4 (5)
BT40 (8)
BT41 (5)
BT42 (5)
BT43 (3)
BT44 (12)
BT45 (12)
BT46 (4)
BT47 (9)
BT48 (7)
BT49 (2)
BT5 (7)
BT51 (11)
BT52 (3)
BT53 (4)
BT54 (11)
BT55 (1)
BT56 (3)
BT57 (4)
BT58 (1)
BT6 (6)
BT60 (9)
BT61 (6)
BT62 (5)
BT63 (4)
BT64 (3)
BT65 (5)
BT66 (7)
BT67 (6)
BT68 (1)
BT69 (2)
BT7 (5)
BT70 (10)
BT71 (9)
BT74 (2)
BT75 (2)
BT76 (1)
BT77 (1)
BT78 (9)
BT79 (9)
BT8 (6)
BT80 (3)
BT81 (9)
BT82 (9)
BT9 (4)
BT92 (5)
BT93 (5)
BT94 (7)