The Austin two-turret Armoured car design was sold to the Russians and delivered to them until the October Revolution of 1917. The final batch was not delivered to the Russians and the Austin cars were used by the 17th Battalion Tank Corps in 1918.  One or two were still around in the dark days of 1940 when anything which could move was used. The Irish Army (Eire or the Republic of Ireland) got seven (7) in 1921 and used them for many years before recycling the turrets (one to each vehicle) onto locally-built Ford Mark V armoured cars in 1940.

The Tank Museum at Bovington vehicle is marked for County of London Yeomanry aka "Sharpshooters" in the 1920s when they were used during the General Strike of 1926.

Miscellaneous info courtesy of Peter Brown.