If you crossed The Wombles with The Clangers, you would end up with something like this. In a forgotten land of junk, the stretchy, bendy Gumbles invent things and go on adventures – but first they must outwit their grumpy, scaly neighbours, the Bottersnikes. Miriam Margolyes lends her voice to the nasty Weathersnike and Hollyoaks actor Jeff Rawle voices Happi, a wordly wise Gumble.