621 VGS is a Volunteer Gliding Squadron based at RAF Little Rissington in Gloucestershire, United Kingdom.

Each is headed by a Commanding Officer and several executives, all of whom are commissioned into the Training Branch of the Royal Air Force Volunteer Reserve.

621 VGS is the natural descendant of 87 Gliding School,[2] formed in the early days of Air Training Corps gliding, and over time has seen the transition from single-seater primary gliders capable of short ground-hops to high-performance two-seater sailplanes, used for elementary training.

It was opened under the command of Prince Bira, who was an exiled member of the Thailand royal family (although never formally recognised as the school's OC).

At that time Sqn Ldr Phillips was running instructor courses for his area at Charmy Down airfield (just north of Bath).

When 87 GS was formed, there was a Bessineux Hangar and two Nissen Huts, no electricity, no Toilets and only gas for heating and lighting.

[2] The Air cadets abandoned the Halesland Airfield site in 1985; it was thought the new GRP gliders could not cope with the rough ground and size of the field.

Eventually the airfield was sold to a development company, initially planning to turn it into a theme park.

Several attempts were made to find an alternative site during the late eighties, namely RNAS Merryfield and RAF Keevil.

As the years progressed the school became much more productive because of the size and well-kept surface of the airfield and this has enabled the staff numbers to grow.

In April 2014 a decision was made by 2FTS to pause Air Cadet gliding whilst an "Airworthiness Issue" was resolved.

The squadron kit was moved into storage at RAF Little Rissington, at the time, home of 637 VGS, by the end of 2016.

[8] Following the sale of Hullavington Airfield,[8] 621 VGS were ordered to relocate at RNAS Merryfield,[9] however, due to complications this was not possible.

The Squadron is now based alongside 637 VGS in a converted Fire-station and tower used during previous operations at RAF Little Rissington.

During this time much work has been done by the MOD and the Squadron to bring the building and the facilities up to scratch, including a fully compliant aircraft hangar, accommodation and an aircrew feeder.