@azb1 Rolls Royce Holding PLC are not involved in cars any more. The brand (name, logo) went to Rolls-Royce Motor Cars Limited which is BMW and the manufacturing went to Bentley Motors Limited which is Vokswagen.
The Rolls Royce Holding PLC chart above is for the manufacturer of aircraft and marine engines.
They have also been making nuclear reactors for submarines since 1965 and are developing
Small Modular Reactor for civilian electricity generation. Solar and wind are great, but sometimes there are weeks with little cloud or sunshine so these smaller, safer nuclear reactors could be quite exciting as countries decrease their fossil fuel use in the coming decades. Maybe even more exciting than a luxury car manufacturer.