Still apparently a place of legend, but you could see what Alpkit have as seconds in their warehouse shop, or there is ebay. There is a seller or two offering some interesting deals on Mountain Equipment down jackets, etc, and they do some sleeping bags as well. Just search for 'mountain equipment down', and daz is the seller, plus of course whoever else is out there.
Well I saddled up Buttercup (my prized unicorn) this morning and bit the bullet, off we went to middle earth and I set forth on my great journey to Alfretonshire!!
Got to the Warehouse about 11am and stood in the queue for an hour, mooched round the shop for a bit and then stood in the queue for the till for another 45 mins! The good thing was that there was an additional 30% off all sleeping bags today!!!!!
Upshot was a choice between an Ascent 500 (marked at £160), and Ascent 700 (marked at £180) and a Neutrino 400 (marked at £220). I nearly bought half a dozen and then thought about how to tell the wife I could make a profit selling them, then again, she used to be a Forensic Scientist, so I put them back.
After much Google I plumped for the Ascent 500 (despite picking the Neutrino 400 first, but then changed my mind). The only drawback is that it didn't have a stuff sack. Still as it only cost me £96, so I thought it was both a bargain and worth the trip!