Yeah, carphone swearhouse have a few chavvy little outfits like this. I was with fresh (also one of theirs) until I got fed up of lies, poor service and general incompetence. Now I avoid all the small (or virtual) networks.
T Mobile Sim Only is a great deal if you're a regular user and can stand to keep your current phone. I'm on the £15 per month deal. Before that I was on their pay as you go which is pretty good.