A well-established producer of kits and parts in Gauge 0 and Gauge 1, Walsall Model Industries recently branched out into Gauge 3.
They currently offer six etched brass kits which are supplied with all fittings required to complete the model, with the exception of the wheels.
The present range (January 2010) comprises :-
GWR MINK G
GWR FRUIT D
GWR OPEN C
GWR SHUNTERS TRUCK
GWR CATTLE WAGON
GWR FRUIT A
Also available is a small range of GWR loco fittings, including wheel castings and some very nice turned brass handrail knobs in two lengths (and very reasonably priced).
Details of products with photos available on website:
(Footnote : I purchased the kit for the cattle wagon when it was first released in the Summer of 2009 but, apart from opening the box to admire the quality of the etching, have not yet found time to construct the model. A review will follow in due course).