HTC Desire C on Virgin PAYG just £100 with £10 credit
The HTC Desire C is pretty low end Android, but it does boast Android 4.0 ICS, a 3.5″ screen, a 5MP cam and is a pretty reliable and solid handset.
At a bit of a steal you can get one on Virgin PAYG from mobiles.co.uk for £99.90. Including £10 of Virgin PAYG credit.
You could then of course get it unlocked across other networks, making a perfect spare handset for festivals etc. without losing that Android functionality.
Free delivery too!