This site - based in Germany - has lots of fabrics I haven't seen in the UK including retro and quirky ones like newsprint. They seem to ship internationally and the cost is not prohibitive.
http://www.myfabrics.co.uk/e-vendo.p...nId=&a=catalog
http://www.myfabrics.co.uk/e-vendo.p...nId=&a=catalog