The figures and the gun (18pdr) are from my range (W^D).I have had problems with the 18pdr,but have Ian doing some handwheels for me. Hopefully available soon.
The WDLR bogies are from Parkside Dundas models,as well as the bogies they also do the D&E class wagons.Alex has cut down one of these for the Howitzer wagon.
The locos are both Simplex's the open one is the Nigel Lawton kit the other is the Meridian protected simplex on an Arnold Kof chassis.Both are motorised.