Please see the quote from the 637 Squadrons, Facebook site:
Last Monday, the first of our Flying Supervisors commenced their conversion training on the Viking T Mk 1 (the military variant of the Grob 103 Twin Acro) at the Royal Air Force Central Gliding School, RAF Syerston. Conversion training will be conducted throughout November / early December in order to restart flying at Royal Air Force Little Rissington in the early new year.
What has not bee said is the fate of the Vigilant powered gliders. However, it is believed they are to be scrapped as reported elsewhere by Mike Grierson.
About the Vking T Mk 1. Source Wiki
The aircraft is currently used by 10 Volunteer Gliding Squadrons located at various sites around the UK. Their role is to train air cadets to a standard that will allow them to fly solo.
Length: 8.18 m (26 ft 10 in)
Wingspan: 17.50 m (57 ft 5 in)
Height: 1.55 m (5 ft 1 in)
Wing area: 17.8 m2 (191 ft2)
Aspect ratio: 17.1
Empty weight: 390 kg (869 lb)
Gross weight: 580 kg (1,280 lb)
Maximum speed: 250 km/h (160 mph)
Cruising speed: 85 km/h (53 mph)
G limits: +5.3/-2.65 at Va
Maximum glide ratio: ca. 36.5
Rate of sink: ca. 0.64 m/s (126 ft/min)
The Viking is used for basic training, high-performance flying and simple aerobatic flying and is a cost-effective, modern glider, ideally suited to its training role with the Air Cadet Organisation. Courses available to the air cadets are the gliding induction course, the gliding scholarship course and the advanced gliding training course.
The aircraft is also used at the RAF Central Gliding School, at Syerston, where it is used in the training of the VGS instructors.