UK Fire Fighter's Alerter County Codes

When the fire brigade analogue alerters were replaced in the nineteen eighties with digital devices, the Home Office Department of Telecommunications, who provided emergency services with their radio equipment, decided to adopt the POCSAG digital paging standard operating on a frequency of 147.800 MHz according to specification MG4.

Paragraph 11.4 of Fire Service Manual - Volume 1

MG4 calls for the use of alerters working to the POCSAG format which are produced by virtually all manufacturers, and uses a 7 digit numeric address or RIC (Receiver Identity code).
The Home Office instituted a numbering scheme whereby the last three digits are fixed for each Brigade. The POCSAG code allows the first four digits to range from 0000 to 1999, a total of 2000 codes per Brigade.

Numbering

Each Brigade can decide how to deploy the 2,000 codes, by observation it generally appears the first two digits 'TT' define the team and type of callout and the next two digits 'SS' for the station number followed by the county code 'CCC'. creating the seven digit format TTSSCCC. Example: 0113225 = Team B at Station 13 (Rothwell) Northamptonshire. All team members have similar pagers that respond to the same RIC. Originally the alerters were tone only, generating one tone for call-out and a second tone for routine testing of the callout communications systems. Some Brigades have introduced text pagers and others have more complex arrangements in place.
The allocation of the last three digits of the RIC have been discovered by observation. The sequence is based on county names in alphabetical order, with each county being separated by eight. Those counties that have not been observed are a prediction based on the county sequence, but could be different - treat with caution. Since the introduction of digital alerters many Brigades have combined and may use just one or both the codes.

The County Codes

CountyActualPredicted
Avon 009
Bedfordshire 017
Berkshire 025
Buckinghamshire 033
Cambridgeshire041041
Cheshire 049
Cleveland 057
Cornwall 065
Cumbria 073
Derbyshire 081
Devon089089
Dorset 097
Durham 105
East Sussex 113
Essex121121
Gloucestershire129129
Hampshire137137
Hereford and Worcester145145
Hertfordshire153153
Humberside161161
Isle-of-Wight 169
Kent177177
Lancashire185185
Leicestershire193193
Lincolnshire201201
Merseyside209209
Norfolk217217
Northamptonshire225225
Northumberland233233
Nottinghamshire241241
Oxfordshire249249
Shropshire 257
Somerset 265
Staffordshire273273
Suffolk 281
Surrey 289
Warwickshire297297
- 305
- 313
- 321
- 329
South Yorkshire337337
- 345
- 353
West Yorkshire361361
London N & S369369
North Wales377377
Mid & West Wales385385
South Wales393393
-Note A401
-Note A409
-Note A417
-Note A425
-Note A433
Northern Ireland441441
   
Greater Manchester Note B & C
North Yorkshire Note B
Scilly Note B
Tyne and Wear Note B
West Midlands Note B & C
West Sussex Note B
Wiltshire Note B
   
Isle-of-Man617 
List Updated 04-OCT-2020
Notes:
Nothing is known about the allocation of RIC codes within Scotland the frequency of 148.7 MHz used to operate their alerters being diiferent from the rest of the UK.

Feedback

I am most grateful to alan4694 and wrr6 who have contributed the majority of the codes listed. If you have discovered any of the missing "Actual" county codes, please get in touch with me, so the list can be updated for everyone's benefit.

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