I love my little Linx 7 Windows 8.1 tablet, its light and 7 inch is a great size for browsing the web and catching up with Twitter (see my review). If you don’t want to pay £79 for a tablet how about £49? The Toshiba Encore Mini WT7-C-100 is a lightweight Windows 8 tablet and comes with 16GB drive, 1GB RAM, Bluetooth and one year of Office 365 and is available at Ebuyer for £49.98
I haven’t tested it myself but for £49 you get a nice little tablet with a years Office 365 and it should be Windows 10 upgradable.
Have a look at ebuyer.co.uk