The 29th (Kent) Searchlight Regiment was a volunteer air defence unit of Britain's Territorial Army (TA) from 1935 until 1955, at first as part of the Royal Engineers (RE), later in the Royal Artillery (RA). It served during The Blitz, defended South West England, Orkney and Shetland before becoming garrison troops in North West Europe.

The 36th (Middlesex) Searchlight Regiment was a volunteer air defence battalion of Britain's Territorial Army (TA) from 1936 until 1961, at first as part of the Royal Engineers, later in the Royal Artillery. As part of 40th Anti-Aircraft Brigade it defended air bases in East Anglia through the Battle of Britain and the Blitz. Towards the end of 1944 the unit underwent infantry training, serving briefly in Norway at the end of the war. After the war, the 36th continued as a TA unit, with some women serving with it. In 1961, the remnants of the regiment amalgamated with others to form a combined infantry battalion, and all links with air defence were severed.