This deal expired a few days ago but is now back in stock. Normally £139 but can get £10 off using new accounts with the code: TDX-YGPK. You can get free delivery and free non-Tesco SIM card as well.
Currently out of stock on Amazon at £144.99 until 19th January. Similar price everywhere else.
This does not have 4G like the first-gen model (also available @ Tesco Direct), but has a larger 5" screen, expandable storage up to 32GB, 8MP camera and dual SIM capacity.