There was a thread about them a little while ago on here and someone recommended a website called Day Soft that sell daily disposables for under £15.
I thought I'd give them a go so ordered some of their 'Silk' lenses but they weren't great for my eyes. I was feeling significantly more discomfort than my Coopervision Aviara monthlies. However, a few days ago I was sent an email from Day Soft asking of my experience. After hearing that I wasn't satisfied they told me they would send out a pack of their 'Classic' lenses which are the same lens but in a different solution. They arrived yesterday and I'm amazed at the difference! I need to test them further but my first impression is very good. They were certainly much more comfortable than their 'Silk' offerings.