GAL produced about 28 examples of the Monospar series of twin-engined light transport aircraft at Croydon Aerodrome between 1932 and 1934.
Also included in the new company were the assets of National Flying Services Ltd, the owner of London Air Park in Hanworth near Feltham, plus adjoining industrial premises built in 1917 by Whitehead Aircraft Ltd.
GAL also operated an RAF elementary flying training school at Fairoaks Aerodrome, Surrey.
[2] After World War II, GAL diversified into the construction of pre-fabricated houses and car bodies.
On 1 January 1949, this led to the two companies merging to form the Blackburn and General Aircraft Ltd.