Need a cheap mobile phone that can access the internet for 5 weeks

How cheap? Motorola probably make the best budget Android phones, check out their range, I had a g5 for a while and was impressed at the price point. Second hand off fleabay even cheaper, regards

just bid £40 for one on ebay, the phone looks ok thx.

Ask around among friends and neighbors. Most people have a spare one lying around that's worth nothing on the market. Someone might give you one for a month.

Otherwise look on eBay. In Germany we have eBay kleinanzeigen which shows things people are selling in your city. I'm sure there's a similar one for the UK. I've used that to buy an emergency phone before.