THE only professional wing walking team in Europe will be performing breathtaking stunts at the Kemble Air Show on June 20.

Slicing through the sky at 150mph, the Utterly Butterly wing walkers will wave to the Kemble crowd from the top wing of their 1940s Boeing Stearman biplanes.

They will be part of three and a half hours of flying displays at the annual event, which is expected to attract 20,000 people.

The show will include air and static displays of war birds, vintage planes and modern jets.

The Red Arrows will be making a special appearance to mark 40 years of displays.

Pilots will be screaming across the sky in an array of jets including the Harrier, Tornado, Jaguar, Hawk and Hunter, Gnat and Jet Provost.

Although the Utterly Butterly team will be flying at a slower pace, the pilots and wing walkers will be performing astounding aerobatics and acrobatics in the air.

Wing walker Helen Tempest of Chalford has been performing the death- defying feat since she was 15.

"My father was a display pilot and it fired my imagination and I thought it was amazing to watch. I pestered him until he let me go wing walking when I was 15," she said.

At this year's air show the wing walkers plan to perform handstands on the wing 500 feet up and will wave through a sequence of loops rolls and stall turns.

Pulling up to 4G (four times their own body weight) in the air, the wing walkers need to be strong and agile.

"In the final flypast we climb to a position halfway between the wing and the cockpit," Mrs Tempest said.