Regional Seats of Government or RSGs were the best known aspect of Britain's civil defence preparations against Nuclear War. In fact, however, naming conventions changed over the years as strategies in Whitehall changed.
In the aftermath of the nuclear attack on Hiroshima and the Russian acquisition of the atom bomb, it was clear that London could not survive a nuclear bombardment. Although considerable effort still went into secret construction of military citadels under London, the solution was to disperse the machinery of government into small pieces in the provinces, where there would be a greater chance of survival.
Experiments along these lines had taken place during the Second World War, when a system of Regional Commissioners existed and key departments were moved out of London to Bath, Harrogate and Cheltenham, among others. However, the idea of a Regional Commissioner dated back to the First World War and the 1926 General Strike.
It was then expected that Central Government might itself cease to exist, and control would pass entirely into the hands of a Regional Commissioner, of Cabinet rank, who would wield absolute power in his region. His staff would replicate all parts of Central Government. -From the Wikipedia .
Post attomic-war or Nazi invasion function
Each of the Regional Commissioners would asses his facility's situation, send out people to servery the local area (and in a Cold War secenarion- mostly die of radiation sickness), contact other command bunkers subordinate to his and prepare to run the region he control as best he could, by what ever means he could, in the hope that something could be salvaged from the post war disaster.
1962: The Apocalypse
In 1962: the Apocalypse the world had become more aggressive and the nuclear bomb was seen (largely only in the military, but not by most politicians, the general public, business or scientists) as a reasonable solution to any military crisis. Government and industry was burred in old mines, put in to secret bunkers or banished to remote places as in real life, but more so. Old OTL WW2, existing OTL Cold War and some OTL post 1962/planned were activated and/or built.
- The mostly OTL 1962 Regional Seats of Government and their subordinate OLT WW2 goverment war rooms were situated in -
- A vast complex of former Bath stone quarries at Hawthorn final emergency National Seat of Government.
- Gaza Barracks, Catterick Camp (Northern)
- Kenton Bar outside Newcastle upon Tyne RAF operations room.
- Hexam ***
- Imphal Barracks, York (North Eastern)
- Lawnswood, Leeds
- Bempton former ROTOR bunker *** and *
- Grantham* (North Midlands)
- Nottingham War Room
- Chalfont Drive, Nottingham
- Cambridge War Room (Eastern)
- Loughborough former hardened cold store. *** and *
- Brooklands Avenue, Cambridge
- Skendleby ROTOR bunker***
- Bawburgh ROTOR bunker***
- The London War Rooms
- Kelvedon Hatch Secret Nuclear Bunker
- Northumberland Avenue, Wanstead group control
- Beatrice Road, Southall group control
- Civil Defence centre for Stoke Newington**
- Pear Tree House group control
- Camberwell and Southwark borough councils' joint bunker
- Church Hill Road, Cheam group control
- Warren Row, near Henley on Thames (Southern)
- Stoughton Barracks, Guildford****.
- Whiteknights Park, Reading
- Tunbridge Wells
- Dover Castle
- Bolt Head, near Salcombe in Devon. (South West)
- A underground ammunition store at Hawthorn, Wiltshire.
- Ullenwood, former anti-aircraft control site near Cheltenham Spa.***
- Flowers Hill, Bristol
- The army barracks at Brecon (Wales)
- Coryton, Cardiff
- Llandudno Junction *** and *
- A former ammunitions storage bunker at Brackla Hill, Bridgend *** and *
- The Drakelow Tunnels, near Kidderminster. (West Midlands)
- Shirley, Birmingham
- The ammunitions store at Swynnerton, Staffordshire***.
- Shrewsbury Police H.Q.***
- United Kingdom Warning and Monitoring Organisation bunker at Lawford Heath near Rugby.***
- Fulwood Barracks, Preston.(North West)
- The technical college at Southport.***
- RAF Hack Green.
- Regional War Room, Mount Eden Park, Belfast. (Northern Ireland)
- The military headquarters in Lisburn**.
- Kirknewton, near Edinburgh (Scotland)
- Barnton Quarry in the Western outskirts of Edinburgh
- Anstruther in Fife
- War Room at Kirknewton
- The Aircraft control station at East Kilbride.
- Prestwick Airport***.
- Gaza Barracks, Catterick Camp (Northern)
- *= Only planned in real life.
- **=None allocated to the role in reality, so I filled in the planing gap with another real life place I thought sounded up to the job.
- ***=In use earlier than reality.
- ****=Was informally untill it was made offical in the mid 1960's.