It was the wonderful Ivor The Engine.
"...Not very long ago, in the top left-hand corner of Wales, there was a railway. It wasn't a very long railway or a very important railway, but it was called The Merioneth and Llantisilly Rail Traction Company Limited, and it was all there was. And in a shed, in a siding at the end of the railway, lives the Locomotive of the Merioneth and Llantisilly Rail Traction Company Limited, which was a long name for a little engine so his friends just called him Ivor..."
What more could you want? Ivor had everything: North Wales, choirs, coal mines, narrow gauge steam railways, elephants, and (of course) dragons!
And now, if you have a colour printer (and a toilet roll), you can make your very own Ivor!