We just use an old laptop, hooked up to the big TV (VGA cable, not all TVs have a VGA port). Firefox (or any other browser of your choice) with the Hola Unblocker extension. With that you'll get access to all the online iplayer type stuff, BBC, ITV etc. if you have a decent internet service then you're all good to go. No extra costs for a VPN.
The other free option is to wait for stuff to appear on YouTube. My Mrs regularly watched Casualty (she's a casualty tragic!) on the ipad streamed through Apple TV box to the big telly.
We don't like paying for stuff if there is a free option. :-)