My understanding is that it is the Rover Car company of Solihull.
Many car companies had their own "in house" upholstery departments before WW2 and Rover cars was a quality car maker.
Not long after WW2 Rover "stuck" a Rover car engine into a Willys Jeep chassis, creating the first Land Rover. Interestingly the light green paint that very early Land Rovers were painted was war surplus paint that had been used to paint the interiors of cockpits/aircraft of RAF aircraft during WW2.