Try Witham Specialist Vehicles near Grantham.
They recently had some Seakings for sale to be used as sheds and man-caves
They have a nice looking CVR(T) Scimitar for sale. Im amazed it only has 883 miles on the clock (unless they spent most of their service-life broken down or gets horrendous fuel economy ?)
Did RAF Reg and RAF Bomb Disposal use CVR(T) at some point?