GKN Sankey engines

The 240 hp multi-fuel opposed-piston six of the FV430 series.

4 vehicles: FV434, FV438 Swingfire, FV432 (1962–71), FV430 Mk3 Bulldog

The 164 hp Bedford six of the early Saxon.

2 vehicles: Saxon AT105 (1976– ), Saxon, Northern Ireland orders

Cummins’ B-series six, 5.9 litres from 1989 and 6.7 from 2007, in the heavy-duty Rams.

1 vehicle: Saxon AT105 (1976– )

The 210 bhp turbocharged and intercooled Perkins of the Simba.

2 vehicles: Simba, Armed Forces of the Philippines, Simba (1993–97)