Hotspur Sandringham 139″ AA Gun Carrier.

Among the military bodies offered on the Sandringham 6 — the Land Rover-approved 6×6 conversion of the Series III Stage One V8 engineered by SMC Engineering (Bristol) and marketed with Hotspur — period brochure material shows an air-defence carrier mounting twin Rheinmetall Rh 202 20 mm autocannon, each fed from 270-round magazines, on the rear platform. The two-ton-payload 6×6 chassis, in 125-inch (S6) or 139-inch (S6E) wheelbase, gave the light AA system a mobile mount while retaining over 90 per cent standard Land Rover parts.

The Sandringham 6 was first shown at the 1980 British Army Equipment Exhibition at Aldershot and entered production in 1982, and the AA configuration is believed to have appeared as a demonstration of the chassis' versatility in that period. No customer for the anti-aircraft variant is documented, and with the entire Sandringham 6 run put at around a dozen vehicles it almost certainly remained a brochure offering and exhibition prototype. Documentation is thin — chiefly scanned promotional photographs — so details of this variant should be treated with caution.

Research status: draft — identification, dates or figures could not all be pinned down; the summary says what is unresolved.