Looking for an affordable Android tablet with a large screen, then consider the Viewsonic Viewpad 10E at Zavvi which costs £160, roughly half the price of the old iPad 2.
It has a sensibly improved hardware compared to the old iPad. There's a 1Ghz single core Cortex A8 processor, 512MB RAM, 4GB onboard storage (with a microSD card slot), a 9.7-inch 1,024 by 768 pixels capacitive display, Wi-Fi, Bluetooth, a 1.3-megapixel front facing camera, microUSB and microHDMI.
Unfortunately, because it runs on Android 2.3 Gingerbread rather than Honeycomb or Ice Cream Sandwich (Viewsonic hasn't confirmed any upgrade path yet), it doesn't come with Google Play (formerly known as Android Market) which means that you will have to rely on third party App repositories.
The tablet comes with two; Amazon's App Store and 1Mobile Market although either will only allow you to access a fraction of the apps on Play.
The Viewpad 10e also features a 3D user interface called the Viewscene 3D which looks like a rotating cube. Other rivals include models from Arnova, the Advent Vega and the Hannspree Hannspad where in stock.