I have to recommend the Tesco Hudl, I've had one for over a month now and for the money I paid it can't be faulted. Well I say money, but strictly speaking it cost no money as I used my accumulated clubcard vouchers. The current double you money deal with the vouchers meant that it cost £60 in vouchers.
My only slight criticism is that the memory cant cope with some of the larger, demanding games, the Android version of FIFA 14 being one example. The front camera also isn't brilliant, but comparable with some more expensive models, and can be used for Skype with some success. My kids love it for the many games that can be played easily on it, and its good at keeping them quiet in the back of the car by streaming Netflix content to them (via my tethered mobile).
If you manage to find one in stock, I would definitely recommend it!