I don't think it will work as a front page post as quantities are limited and deals are timed, but Amazon UK have some good prices on their Black Friday promotion:
http://www.amazon.co.uk/deals-offers-savings/b/ref=amb_link_…
I've bought some Game of Thrones books ($42 delivered right now for a box set, 7% better than booko's best price) and seen pretty good prices for a few things like watches, pressure washers and others. It also shows forthcoming deals and the time they kick-off. Most good deals last a few minutes, but the site seems to be handling the load.
Check it out and post any good deals.
Be sure to follow HotUKDeals Amazon.co.uk section to see any good deals related to Black Friday.
EDIT: Also Amazon.co.uk's Twitter