I mainly make our curtains - most recently I purchased some velvet fabric from Timorous Beasties but I've also used Voyage and Villa Nova fabrics which are nice quality. We do also have some fabulous vintage GP & J Baker velvet curtains that I found on ebay a few years back.
Our best rugs are from Liberty (a splurge when I received an inheritance a few years ago), eBay and a huge antique Persian one we got from a rug shop in Marlow. We've also bought cheaper rugs (under £500) from irugs which aren't bad for the price.