Parachute tuition for British special forces soldiers is the best in the world, an inquest was told.

Captain Daniel Wright, 25, of the Queen's Gurkha Signal Corps, died at Weston-on-the-Green after plummeting 2,500ft in November 2005.

It was suggested to Flight Sergeant James Doig, who trains parachutists, that two-way radios for trainees and beeping altimeters to warn whether to deploy reserve chutes were advisable.

Flt Sgt Doig told Capt Wright's inquest in Oxford today: "We feel that at the moment these measures are not necessary. Our training is the best in the world. We have very few injuries."

Capt Wright, of Newport, South Wales, died after his main 'chute did not open and he did not open the reserve until it was too late. Today the inquest heard that if Capt Wright had a radio he probably would have survived, because colleagues could have talked him through what he needed to do.

But Flt Sgt Doig said that radios could cause further confusion to students on their first jumps.

Earlier the coroner expressed astonishment when told a document, about whether Capt Wright's altimeter worked or not, had been destroyed.

The inquest continues.