A few high-tech companies that make really important things that consumers never hear about. * Renishaw. Precision measurement and manufacturing. * Spectris. S

A few high-tech companies that make really important things that consumers never hear about. * Renishaw. Precision measurement and manufacturing. * Spectris. Scientific instruments. Precision components. * Oxford Instruments. All sorts of high-tech stuff used in science and research Rolls Royce aerospace is pretty cool. There are some defence related companies that do tech stuff. Radar, guidance systems, battlefield comms, that sort of thing. Formula One tech is mostly British. MclLaren, Red Bull Racing, Mercedes are all UK based.