The science cluster is known as Science Vale UK.[34] Off the B481 in Rotherfield Peppard, near Sonning Common, is the Johnson Matthey Technology Centre, which research fuel cells (with platinum supplied by Anglo American Platinum, the world's largest producer). Stuart Turner (pumps) is at Henley-on-Thames, with Ella's Kitchen. Williams Performance Tenders, who make speedboats, is off the A4074 in Berinsfield.