Saw this when I went to Wickes in Halesowen this morning. Thought it was a good deal, considering its got both a thermal cut-out & a RCD device. Great for power tools and gardening equipment. On top of that, its got a wickes lifetime guarantee! All for the princely sum of £13.21.
Although the website doesn't show the RCD breaker, it is built in to the plug.
Is also available online.
Picture shown is a 4-socket, but the £13.21 is for dual-socket.