http://www.wiltshire.gov.uk/community/getcom.php?id=10
Qte:
Dowty Fuel Systems Ltd was established in 1922. It had existed earlier than this, under the name of the Mendip Motor and Engineering Works. The firm was responsible for designing and planning the Mendip Car, eventually producing 500 cars. After the death of the owner, when the firm was in Bristol, the Thatcher brothers started up in Atworth again. They were soon producing high-class engineering materials. The firm expanded rapidly in the Second World War, providing components for the aircraft industry. Its workforce had now grown to 600. The business was sold to the Dowty Group in 1948. In 1991 Dowty New Mendip finally shut down production after 69 years
Unqte
Been in touch with Messier-Dowty, who "think" it was a standard part fitted to several types of aircraft, possibly a Harrier being the front runner.
Dowty was bought over by an American Company called Delphi. So despite my Scottish nature, I telephoned them in the States. After 10 mins on hold, I gave up. Contacted their UK folks in Cheltenham, who could not help either.