Many thanks to regular commenter Fimb for sending the penultimate of the London Underground related Christmas gifts. It's a Toy Wooden Tube Train from the Early Learning Centre and as Fimb says it is a bargain for a fiver.
Although it's on the Early Learning Centre's website, Fimb took the above picture showing that it's still available in stores now, so if you need a last minute gift pop over to your nearest branch. I love the caption on the website though:
"2 tube train carriages to take the city people to work."