One of the games at the wargames show at Bovington that I did a good look at was this 15mm 1946 game complete with a range of alternate German and Allied tanks that were designed, but either were too late for action, or never got further than the drawing board. I have to admit I never got round to checking what actual models were represented on the table, but there were E-100 and E-50 tanks as well as Panther IIs.
This photograph shows a Sarissa Precision Factory. I really do like this model (and the huge one for 28mm too). Around it are finished and partly finished tanks of a variety of types.
A large tank on a railway wagon. The table also had a lot of HO 1/87th scale buildings that did not seem out of place on the table. There are a range of HO buildings that would be ideal for 15mm games, especially those of the industrial variety.
Here is another Sarissa Precision factory with a couple of JagdTigers outside. As with the other, it looks like the RAF has been busy trying to stem the production of these new German tanks.
Here is a overview of the table. There were TT scale trains, wagons and track (which are just about an appropriate scale for 15mm).
In the box to the side of the tables were 15mm models of the Black Prince, the Tortoise and Centurion Mk1 tanks.
All of these could be found (for real) in the Tank Museum itself.