Some more Vickers options that have been dug out and typed up over the past few month:
Vickers FMC Mk 5 (L7 105mm)
A VFM5 with the venerable L7 105mm cannon as opposed to the Royal Ordnance LRF 105mm. Whilst functionally identical to the one in-game, it could be given some unique ammunition (like Excalibur 105mm APFSDS) to give Britain a higher BR tracked light tank.
Vickers Mk 4 Valiant (Revised Universal Turret)
A variant of the long overdue Vickers Valiant, incorporating the same redesigned Universal Turret as seen on the Vickers Mk 7/2. If the regular Valiant is the Vickers Mk 4, then this is the Vickers Mk 4/2.
Vickers Retrofit Centurion (Early)
A basic retrofit package for the Centurion, based on a Mk 5 chassis, incorporating a 750hp engine upgrade.
Vickers Retrofit Centurion (Late)
A more advanced retrofit package for the Centurion, featuring the same new engine, but also new FCS, a laser rangefinder, and, importantly, access to early 105mm APFSDS, like L64A4. Essentially a British Olifant Mk 1A.
An early variant of the Challenger 2E, then known as the Desert Challenger, which lacks the redesigned mantlet, retains the barrel mounted TOGS, and has a drivers camera with thermal imaging. All while keeping the 1,500hp engine. A unique option for another highly mobile Challenger 2.