Here's an interesting selection of scratch- and kitbuilt 7mm rolling stock including some from the constituent companies. The models are from the shelves of Philip Millard's 'Home of O Gauge' shop, which specialized in new and second-hand 7mm models. Many thanks to Philip Millard for providing the photos.
GWR 8-wheel all-third clerestory coach Diagram C3 No.1184, built from a Slater's kit.
GWR 40' Passenger Brake Van No. 343, built from an IKB Models kit (now BGS).
GWR 6-wheel Lavatory-Third No.348, built from a long-discontinued PC Models kit. This model has compensated flexible chassis and is fitted up for the later electric (rather than gas) lighting.
GWR 21' Passenger Brake Van No.109, built from an IKB Models kit (now BGS) with compensated chassis.
Another 21' PBV, this one scratchbuilt and with a guards lookout.
A four-wheel Milk Van No.346 to Diagram O1. This is an unusual model, showing the first diagram of the GWR "Siphons". It was handbuilt from Plastikard with Slater's wheels. Note the milk churns.
GWR Horsebox No.319 to Diagram N12. Scratchbuilt in Plastikard, with Slater's wheels, sprung buffers and screw couplings.
Horsebox No.839 to Diagram N9, again scratch-built from Plastikard.
Horsebox No.867 to Diagram N11, built from Plastikard.