I simply can not get enough fabric...much to my poor Husband's dismay...for me I love to look at it, touch it, keep it and occasionally cut into it.
Fabric is becoming much more widely available in the UK and the number of really good fabric shops is increasing. The majority of the time I buy my fabric online rather than making a trip to an actual physical shop (partly due to the distances from home & 2 Twin Boys under 3years old do not make for a relaxed fabric buying experience!).
Online retailers:
Gone to Earth
Saints & Pinners
Fabric Rehab
Simply Solids
Seamstar
Backstitch
Prints to Polka Dots
The Little Fabric Store
Sew Me Happy
Hawthorne Threads
Fabricworm
Pink Chalk Fabrics
Fat Quarter Shop
Online / 'real bricks & mortar' retailers:
Thread Bear
Puddleducks
John Lewis - often stock Amy Butler & Tanya Whelan fabrics in store
Ikea