You can get a refurbished 16GB Asus Nexus 7 tablet with a 12 month warranty for £119 including delivery from Tesco Outlet on ebay, seems great value.
Battery life: Up to 9.5 Hours
Built in webcam: Yes
Hard Drive: 16Gb
Processor Model Number: Tegra 3 T30L
Processor speed in GHz: 1.2 GHz
Screen Size: 7"
Built in Wi-Fi: Yes
Operating System Requirements: Android 4.1 (Jelly Bean)
Type: Tablet Computer