Eek, and now I've delurked and only just seen this, you've only a fortnight to go!! Did your local store reopen, or is it gone for good?
Okay, here's who I use for my fabrics and haberdashery - not offcuts, but you can get raw materials to play with. Sorry, I haven't got any purple scraps, otherwise I'd post them to you (yep, I know what it's like - you don't want half a metre, you want ...). Have you got a local market which might sell feathers, haberdashery and so on?
Otherwise, I generally buy online from:
Fabric Land (they don't have an online shopping basket, as such, but phone them, I've never had bad service!) www.fabricland.co.uk/
Cheap Fabrics UK www.cheapfabrics.co.uk/
There are loads of others, but I don't have enough of an ordering track record with them to know if they're fast and reliable.
Good luck!