Modelling the Glasgow and South Western Railway
Currently there are kits for the Drummond 45 class 0-6-2T locomotive produced by Mercian Models in 4mm and 7mm
DJH used to produce a kit for the 361 class 4-6-0 with bogie tender in 4mm scale - no longer produced this is a sought after kit!
Agenoria produce a kit of a 040ST Peckett locomotive - the G&SWR used one at Ayr harbour
The Association produced a kit for the 8 Class 4-4-0 in 4mm sadly it is no longer available and we no longer have the moulds
We produced a 7mm kit for the Drummond 45 class 0-6-2T and also the 336 Greenock Bogie 4-4-0.  These were very popular and most were snapped up with pre-orders.  We do not have any more kits available.
Just Like the Real Thing produces several variations of Manson  bogie coaches.
The Furness Model Company produce a van kit in 7mm