Castle Air Charters has invested in a new high definition HD Cineflex camera as UK demand for aerial photography booms.

Keith Thompson, chief pilot, said Castle Air, based in Trebrown in Cornwall, had been commissioned to do work for the third in the BBC Coast television series. Castle Air filmed the initial Coast programme and the follow-up.

"We are filming this third series in high definition," Thompson added. "More and more people are asking for it." Castle Air is also filming in high definition for BSkyB on the National Trust which looks after properties deemed to be worth preserving in the national interest.

Castle Air operates a Bell JetRanger and three A109 twin engine helicopters with seven-passenger capacity. As well as charter services it buys and sells helicopters and has a maintenance and sales division.