The regiment was established in 1947 when the 7th Regiment, Royal Horse Artillery, was retitled the 12th Anti-Tank Regiment Royal Artillery.^[2] It was deployed to Palestine that year, to Libya in 1948 and Trieste in 1950.^[2] It also saw action in Malaya in 1963 and Borneo in 1964.^[2] Units saw tours in Northern Ireland during the Troubles in 1971, 1974, 1977, 1979 and 1988.^[2] T Battery and 9 Battery were sent to the South Atlantic during the Falklands War in 1982.^[2] T Battery and 58 Battery saw action during the Gulf War in 1991.^[2] 12 Battery was deployed for the 2003 invasion of Iraq.^[2]

In January 2008, the regiment moved to the Baker Barracks, Thorney Island, upon its return from Germany.^[2]

Under Army 2020 Refine, T Battery was re-roled from the headquarters battery to form a further Stormer HVM battery while 170 (Imjin) Battery was brought out of suspended animation to take their place as headquarters battery.^[3]

The batteries are as follows:^[4]

• 170 (Imjin) Battery Royal Artillery - Lightweight Multiple Launcher Starstreak & Lightweight Multirole Missile and Headquarters Battery, Divisional Air Defence Cell
• T Battery (Shah Sujah's Troop) Royal Artillery - Self Propelled HVM Stormer (Starstreak & Lightweight Multirole Missile)
• 9 (Plassey) Battery Royal Artillery - Self Propelled HVM Stormer (Starstreak & Lightweight Multirole Missile)
• 12 (Minden) Air Assault Battery Royal Artillery - Lightweight Multiple Launcher Starstreak & Lightweight Multirole Missile
• 58 (Eyre's) Battery Royal Artillery - Self Propelled HVM Stormer (Starstreak & Lightweight Multirole Missile)
• 137 (Java) Battery Royal Artillery - Self Propelled HVM Stormer (Starstreak & Lightweight Multirole Missile)

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