Can you help me find fabric to make quilt for daughter?

hi i want to make my own quilt covers for my daughters cot/bed as i can never find any i like. I need help in finding fabric (not too expensive) to find them and i was wondering if anyone could recommend anywhere. cotton or jersey would be best i live in b'ham uk so uk stores or web sites would be best. Any help would be apperciated. Serious answers only please