This squadron was one of a number of units that were created as the result of the decision to convert London-based battalions into anti-aircraft units in 1935. When the anti-aircraft role was abolished in 1955, the unit was transferred to the Army Emergency Reserve.

A second unit, which is represented in the Squadrons lineage, is 3 Construction Regiment, formed as part of the expansion of the AER in 1953. This unit was re-rolled as the 89 Signal Regiment AER in 1959, and it was merged into the 83 Signal Regiment in 1961. (q.v. 89 Signal Squadron).

Originally formed at Southfield, the Squadron has been a component of 31 Signal Regiment since 1967. Most of the Squadron personnel were taken from 332 Signal Squadron and 47 (MY) Signal Regiment. From 1985 to 1986 the unit moved to Lytton Grove, Putney while Southfield was rebuilt, and from 1994 to 1995, the unit moved to Chelsea. The unit returned to White City, London.

Heraldry and ceremonial

The unit has worn the Dutch Tile badge of 47 Signal Regiment since 1995 on the arm of some orders of dress.