# The Wireless Telegraphy (Licence Charges) Regulations 2005, Schedule 4: DESIGNATIONS OF HEAVILY CONGESTED, CONGESTED AND NON-CONGESTED AREAS FOR THE BUSINESS RADIO (IR 2008 DATA) LICENCE


Designation of area
National Grid References for 10km x 10km areas
Heavily congested
TQ 200700; TQ 200800; TQ 300700; TQ 300800
Congested
TQ 100700; TQ 100800; TQ 200900; TQ 300900; TQ 400700; TQ 400800
Non-congested
All National Grid References for 10 km x 10 km areas other than those designated as heavily congested or congested

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Source: https://www.legislation.gov.uk/uksi/2005/1378/schedule/4 (the official version)
Page: https://openlegislation.uk/wireless-telegraphy-licence-charges-regulations-2005/schedule-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.