A joint project between Rolls-Royce and BMC to produce both a luxury BMC car and a small Bentley, it used BMC's Farina bodyshell with a 4-litre Rolls-Royce engine.

The BMC version appeared in 1964 under the Vanden Plas badge. The 4-litre R engine was supplied by Rolls-Royce and had the unusual combination of overhead inlet and side exhaust valves. An automatic gearbox was fitted as standard and the trim and equipment were well up to the quality expected of a Vanden Plas.

Unfortunately the 4-litre R did not sell as well as hoped, despite an attractive price and reasonable performance. The model was discontinued in 1968, after a modest production run of fewer than 7,000 cars.