He further improved the problematical lighting of theatres which used limelight, with his invention of the Bude-Light. Using a standard flame producer such as an oil lamp and by adding oxygen directly into the flame he produced a dramatically increased bright white light. A system of prisms and lenses distributed Bude Light to every room of his Castle house. Bude lights were fitted in the House of Commons—where it is said that he replaced 280 candles with three such lamps, which lit the House for sixty years until the arrival of electricity—as well as along Pall Mall and in Trafalgar Square where recently refurbished replicas of the two styles originally used can be seen.