I'm afraid you're about a day late - this all kicked off yesterday afternoon and is all over facebook and twitter (Other social media outlets exist. Actually, no, they don't).
I managed to grab the 32GB from BestBuyUK for £115 at around 7pm last night (its getting delivered tomorrow), much to the chagrin of my colleagues who were also trying to get one - I got lucky - went to the site on the off-chance just as they'd updated their prices and before they'd tweeted.
Getting mine is a bit of a punt - the default WebOS is ok, but the eco-system in the way of apps isn't very mature. However, some people are pretty close to getting Android running on it which opens up that huge marketplace.
Some of my colleagues have spent large parts of today trying to get one somewhere, but as soon as the appear, they sell out again. All these places have sold out:
CPW
BESTBUY
CURRYS/PC WORLD/DIXONS
Fnac
Amazon
John lewis (online)
Dabs
BT
Tesco Direct
HP
Ebuyer
Crescent Electronics
Pixmania
PC World (Business)
There's still some online stores that haven't reduced their price yet, but there's thousands of people refreshing them so they're going slow. If you're after one, my advise would be to register on those sites, open many tabs and set aside a number of hours.