See Bentley Rotary.

This company built the Clerget engines under license, but improved (first as A.R. or Admiralty Rotary) and then the 150 hp BR-1 and the 250 hp BR-2, both with 9 cylinders.

-These rotary engines were also built by Humber Ltd. in Coventry and by Gwynnes Ltd. in Hammers.

"B.R.-1"

"B.R.-2"