Our 009 layout - and Himself - will feature in a programme on BBC4 on Monday night.
Dduallt was filmed for the programme called The Golden Age of Steam Railways a few months ago.
The programme will tell the story of the revival of the Festiniog Railway and the great Deviation project of the 1960s and 1970s. The producers asked to use our layout to explain how the spiral was constructed by the Deviationists at Dduallt and give viewers a better appreciation of the scale of what was acheived soley by volunteer labour.
The camera wasn't just trained (geddit?) on the layout because they also filmed interviews with Himself, and he'll be watching nervously to see how much of his contritbution made it through into the final edit.
You can read more about the prgramme here on the BBC website.
Please do let us know what you thought of it.