# The Wireless Telegraphy (Licence Charges) Regulations 1999, Schedule 6: HEAVILY CONGESTED AND CONGESTED AREAS FOR COMMON BASE STATION OPERATOR LICENCE


Designation of Area
National Grid References for 60 km × 60 km areas
Heavily Congested
TQ 000500; TQ 000600; TQ 000700; TQ 000800; TQ 000900; TQ 100500; TQ 100600; TQ 100700; TQ 100800; TQ 100900; TQ 200500; TQ 200600; TQ 200700; TQ 200800; TQ 200900; TQ 300500; TQ 300600; TQ 300700; TQ 300800; TQ 300900; TQ 400500; TQ 400600; TQ 400700; TQ 400800; TQ 400900; TQ 500600; TQ 500700; TQ 500800; TQ 500900
Congested
NX 300000; NX 400000
SC 100600; SC 200600; SC 200700; SC 200800; SC 300600; SC 300700; SC 300800; SC 300900; SC 400700; SC 400800; SC 400900
SD 200000; SD 200100; SD 300000; SD 300100; SD 400000; SD 400100; SD 500000; SD 500100; SD 600000; SD 600100; SD 700000; SD 700100; SD 800000; SD 800100; SD 900000; SD 900100
SH 600600; SH 600700; SH 600800; SH 700600; SH 700700; SH 700800; SH 800600; SH 800700; SH 800800; SH 900600; SH 900700
SJ 000300; SJ 000400; SJ 000500; SJ 000600; SJ 000700; SJ 000800; SJ 100300; SJ 100400; SJ 100500; SJ 100600; SJ 100700; SJ 100800; SJ 200300; SJ 200400; SJ 200500; SJ 200600; SJ 200700; SJ 200800; SJ 200900; SJ 300300; SJ 300400; SJ 300500; SJ 300600; SJ 300700; SJ 300800; SJ 300900; SJ 400300; SJ 400400; SJ 400500; SJ 400600; SJ 400700; SJ 400800; SJ 400900; SJ 500300; SJ 500400; SJ 500500; SJ 500600; SJ 500700; SJ 500800; SJ 500900; SJ 600100; SJ 600200; SJ 600300; SJ 600400; SJ 600500; SJ 600600; SJ 600700; SJ 600800; SJ 600900; SJ 700100; SJ 700200; SJ 700300; SJ 700400; SJ 700500; SJ 700600; SJ 700700; SJ 700800; SJ 700900; SJ 800100; SJ 800200; SJ 800300; SJ 800400; SJ 800500; SJ 800600; SJ 800700; SJ 800800; SJ 800900; SJ 900000; SJ 900100; SJ 900200; SJ 900300; SJ 900400; SJ 900500; SJ 900600; SJ 900700; SJ 900800; SJ 900900
SK 000000; SK 100000; SK 200000
SO 900800; SO 900900
SP 000800; SP 800100; SP 800200; SP 900000; SP 900100; SP 900200
SU 300000; SU 300100; SU 300200; SU 300300; SU 300400; SU 300500; SU 300600; SU 400000; SU 400100; SU 400200; SU 400300; SU 400400; SU 400500; SU 400600; SU 500000; SU 500100; SU 500200; SU 500300; SU 500400; SU 500500; SU 500600; SU 600000; SU 600100; SU 600200; SU 600300; SU 600400; SU 600500; SU 600600; SU 700000; SU 700100; SU 700200; SU 700300; SU 700400; SU 700500; SU 700600; SU 800000; SU 800100; SU 800200; SU 800300; SU 800400; SU 800500; SU 800600; SU 800700; SU 800800; SU 800900; SU 900000; SU 900100; SU 900200; SU 900300; SU 900400; SU 900500; SU 900600; SU 900700; SU 900800; SU 900900
SZ 300800; SZ 300900; SZ 400700; SZ 400800; SZ 400900; SZ 500700; SZ 500800; SZ 500900; SZ 600800; SZ 600900; SZ 700900; SZ 800900; SZ 900900
TL 000000; TL 000100; TL 000200; TL 100000; TL 100100; TL 100200; TL 200000; TL 200100; TL 200200; TL 300000; TL 300100; TL 300200; TL 400000; TL 400100; TL 400200; TL 500000; TL 500100; TL 500200; TL 600000; TL 600100; TL 600200; TL 700000; TL 700100; TL 700200; TL 800000; TL 800100; TL 800200; TL 900000; TL 900100; TL 900200
TR 000100; TR 000200; TR 000300; TR 000400; TR 000500; TR 000600; TR 000700; TR 100300; TR 100400; TR 100500; TR 100600; TR 200300; TR 200400; TR 200500; TR 200600; TR 300400; TR 300500; TR 300600; TR 300700; TR 400600
TQ 000000; TQ 000100; TQ 000200; TQ 000300; TQ 000400; TQ 100000; TQ 100100; TQ 100200; TQ 100300; TQ 100400; TQ 200000; TQ 200100; TQ 200200; TQ 200300; TQ 200400; TQ 300000; TQ 300100; TQ 300200; TQ 300300; TQ 300400; TQ 400000; TQ 400100; TQ 400200; TQ 400300; TQ 400400; TQ 500000; TQ 500100; TQ 500200; TQ 500300; TQ 500400; TQ 500500; TQ 600000; TQ 600100; TQ 600200; TQ 600300; TQ 600400; TQ 600500; TQ 600600; TQ 600700; TQ 600800; TQ 600900; TQ 700000; TQ 700100; TQ 700200; TQ 700300; TQ 700400; TQ 700500; TQ 700600; TQ 700700; TQ 700800; TQ 700900; TQ 800000; TQ 800100; TQ 800200; TQ 800300; TQ 800400; TQ 800500; TQ 800600; TQ 800700; TQ 800800; TQ 800900; TQ 900100; TQ 900200; TQ 900300; TQ 900400; TQ 900500; TQ 900600; TQ 900700; TQ 900800; TQ 900900
TV 400900; TV 500900; TV 600900
Congested
All of Northern Ireland

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Source: https://www.legislation.gov.uk/uksi/1999/1774/schedule/6 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-licence-charges-regulations-1999/schedule-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.