25 (Operations) Group formed on 12 August 1918 at Luce Bay, within North Western Area.

273 Squadron RAF under its operational control, along with the Airship Stations at Luce Bay and Larne.

Six months later on 31 January 1940, it moved again, to Buntingsdale Hall, Market Drayton in Shropshire.

On 7 July 1942, the Air Gunners Schools and the (Observers) Advanced Flying Units for Northern England, were moved into No.

The responsibility for the Air Gunners Schools and the (Observers) Advanced Flying Units in the Midlands and Wales, along with No.

On 28 January 1961 the Group HQ moved to RAF White Waltham.

The group was operational for a further seven years, before eventually disbanding on 1 June 1968, and was absorbed into No.