Tucked away behind some discreet landscaping on the otherwise nondescript A508 connecting Northampton with Leicester, and sharing a roundabout with a household waste recycling centre, is the home of Formula 1's most successful turbocharged hybrid engine.
Mercedes-Benz High Performance Powertrains began its life in a nearby industrial unit, but this facility is something else: neat architectural details mask the wheels of its industry.
"It's not a factory, it's a campus," says managing director Andy Cowell. "It's - hopefully - a nice environment that people enjoy coming to. It's challenging - there are tough technical activities, tough problem-solving, hard graft.