I LOVE visting Bellatextiles! Very inspirational for textile artists and hobbyists alike.
Bella herself is inspirational, and very knowledgeable. I bought my Ashford tapestry loom from here, and my partner her Ashford spinning wheel.
Bella also sells her gorgeous hand-woven shawls and scarves, as well as a wide range of Ashford dyes, Corriedale wool slivers and knitting yarn. This is my one-stop-shop for textile art supplies.
EDIT 30.11.12: Bella no longer sells supplies at her shop, since she is now working as a full-time weaver! She still sells her gorgeous woven products, and will still be attending Bowerbird Bazaar (probably once per year). Check her website for details ;) read more