The gliding operations at North Hill are largely not affected from constraints of airspace, however there are a few local rules to be aware of.
Devon and Somerset Gliding Club (DSGC) at North Hill operates within the ATZ of Dunkeswell airfield and partly within the drop zone of the parachuting club at Dunkeswell airfield.
A letter of agreement has been drawn up between DSGC and Air Westward to delegate airspace and operating procedures to DSGC within Dunkeswell ATZ. This delegated airspace is shown by a red boundary on the local map.
Several years ago a code of practice was drawn up between DSGC and Dunkeswell Parachuting School to enable safe operations. This old code of practice is still in operation although the parachuting organisation has subsequently changed. This delegated airspace is shown by a blue boundary on the local map.
Dunkeswell Ground operates on 123.475.
Dunkeswell Parachuting operates on 129.9 (same as North Hill)
Exeter airport is 9 nm (16 km), south-west of North Hill. It is marked as an aerodrome with Instrument Approach Procedures (IAPs) outside controlled airspace.
quote from Aeronautical chart
"Pilots who intend to fly to or route adjacent to aerodromes with IAPs are strongly recommended when flying within 10 nm of the aerodrome to contact the aerodrome ATSU."
Under a local arrangement, North Hill Duty Instructor telephones Exeter ATC at the beginning of every flying day and informs them of gliding operations so that radio contact does not have to be made every flight.
However, any flights to the south that may continue across the extended centre-line of Exeter Airport (ie south of the A30) should make contact with Exeter Radar to report altitude and position.
Exeter Radar operates on 128.975
26 nm (50 km) ENE of North Hill is the Royal Naval Air Station (RNAS) at Yeovilton, and about half way is its satellite airfield at Merryfield, both are within the Yeovilton Area of Intense Aerial Activity (AIAA). The AIAA covers an area of almost 3000 square kilometers from the surface to 6000', it stretches from the north coast of Somerset to the south coast of Dorset and from the eastern edge of the Blackdown Hills to Shaftsbury.
So any worthwhile cross countries to the east of North Hill are obviously going to be flown through the AIAA.
Whilst there is no legal requirement to have radio communication with Yeovilton, unless wishing to enter the ATZ, it is always wise to contact them if flying within, or near, the MATZ. They would also prefer to be contacted whilst you are flying through the AIAA.
Yeovilton LARS is 127.350 MHz.
Download a briefing presentation by Yeovilton ATC (pdf).
Airway N864 runs roughly north-south with its eastern boundary above the western end of North Hill airfield. The base is FL65 with a minimum altitude of 5500 ft.
Airway N862 runs parallel and to the east of N864, the base is FL105.
These airways are under the control of Cardiff Radar on 119.15.
There is a small area of Cardiff Control Terminal Area (CTA) below Airway N864, 5 nm from the north coast of Somerset, base 4500 ft, tops FL65. As it is Class D airspace, gliders may enter having contacted Cardiff Radar on 119.15