OK bit early I know but ........

Ulster Folk & Transport Museum
Cultra
Holywood
BT18 0EU
Down
Northern Ireland

"  Railway layouts galore, in a variety of scales and gauges, to
entertain and enthral children and adults and children alike. Come
along to see these model engines in a unique setting alongside their
full sized counterparts. Organised by the Friends of Cultra  "

http://www.24hourmuseum.org.uk/museum_gfx_en/NI000016.html