Found 2nd May 2016
Tesco are currently selling the lenovo tab 2 a10 for £139.99 which is a good deal anyway I think. But if you add a cover they give you £5 off, then when you spend over £150 you get £20 off, so overall with the case you get it for £133! Code for £20 off is TDX-HYW3. Case is only selected case, but all offers are on the same page if you scroll down. Sorry a little bit complicated but hope it helps someone.