This tv is on sale at my local Sainsbury for £310. Does anyone know if this a good deal? I've done some research on the net but cannot find much info. Thanks

It's a 2015 model, hence heavily discounted as it has probably been discontinued by Sony and retailers will be clearing their stocks. It may be Sainsburys has bought a job-lot of them.

If it does what you want and you're happy with the price then it's a good deal.