[D.O.G.F.A.N.]

Thanks Gray.
AFAIK......(I like it but had to go to wiki first)

I suspect very few people [myself included] have ever been inside a signal box. Given the oppertunity I would jump at the chance.
If these 26 listed boxes stay IN SITU the status quo remains unchanged.
So it looks like I'll never get to see inside one.
Stuart