"Thanks for a useful list. I didn't know about the east end thrift store but it's just featured in this month's Vogue UK secret address book, so I'd better go quickly before everyone else does. I would also recommend Number 295 Portobello Road. Run by a lovely husband and wife team, their vintage is lovely: plenty of 50s print dresses, hats, shoes etc, and their prices are easily half what you'd expect to pay. I got a satin 60s evening coat for £18, and skirts start at £8.
Ann, if you're still looking for a Bond St bag, try ebay.co.uk or ebay.com. It's the best way to hunt down a specific vintage item, and you can often get a bargain. Searching today I found one bag that seems to be what you're talking about, current bid £4.99. Happy thrifting!"