Sellers confirmed so far (with their areas of interest):

Billyboy x2
Ian from Staffordshire: Theobens, Webleys
Mike & Andy: Weihrauchs, Air Arms, M&Gs, optics
Falcon25: scopes and mounts
Phil & Anne Russell
JohnBaz & Blackrider
HWVixen
Melbourne Marksmen
GarryP
IJ - BSF 65, Gasram Webleys, Anschiana, who knows what other fabled items

If any sellers want to let me know the kind of items they will be selling or looking for then I can add them to the list.

Still room for more sellers.