I'm always surprised how popular Thomas the Tank Engine is even after all these years, but it seems that kids just can't get enough of him, and my youngest is a huge fan. If you know someone who loves Thomas then you might want to take a look at Smyths Toys as they have 25% off a great selection of Thomas Playsets.
Children aged three and over can also play with the brilliant Trackmaster sets that have motorised engines, and these are my favourites. They need a grown up to put the tracks together, but that's very easy to do, and then it's like a first model railway as the little trains whizz around the tracks. There's loads of different sets to collect and they can all be connected with each other so your kids can build up a big railway network.
Also in the offer are some of the Thomas and Friends Take n Play sets which are great for taking to grans house and easy for storage as they pack away so neatly.
You can click and collect for free from Smyths Toys stores, or home delivery is free on orders of £29 or more and £3.99 on smaller orders.