Tucked away in the Gauge O Guild Gazette is a mention that Quainton Road Models are planning a 7mm scale kit for a diagram 7 wagon. Built from 1911 these were the most numerous Great Central wagon of all, more than 6,000 in number. So if you have a GC layout you will need at least one. If you have a large GC layout, you really need about ten! Moreover, after 1917 when these became common user, they would be a fairly common sight everywhere. From Kyle of Lochalsh to St.Ives and from Red Wharf Bay to Dereham. So anyone modelling a British railway up to roughly 1939 could do with one too.
QRM are now only doing limited editions, so if you want one of these you need to reserve one. It's no use waiting until they are ready, because if you do, they won't be, as far as you are concerned. So order one (or more) ASAP.
This is a venture which needs supporting, because if anything in the way of a GC product is to be popular, this should be it.