I visited this shop (combined models and sweets-hop this morning, and was pleased to see they had they had a selection of Hornby-Dublo SD6 wagons.
I paid £6 for a VGC Traffic Services tank; other items included two Fruit Ds, a Cattle wagon, steel-bodied Highfit, Breakdown train Packing Van. There were other items indicated as '3-rail'; I only glanced at these.
Hoping this is of interest to someone.