Hi EAMONN47, congratulations on your Tab3 and welcome to the forum. Glad you decided to join us here at Android Tablets. Using "micro usb to hdmi mhl adapter" as a search argument,, a Google search came up with lots of hits. I'm not sure what's available in the UK, but Amazon, eBay, Walmart, Bestbuy and many others came up. Here in the States, I go to MicroCenter for things like that. Enjoy the forum and your tablet!