I am British and am currently living in Scotland. If that doesn't answer the question I don't know what does.
The most I have drunk is 21 units in 10 minutes, I then spend the next half hour throwing up and then was carried home (apparently). I tend not to drink cheap (< £20 for 70cl) spirits unless already wasted and normally drink ales and I appreciate good whisky.
The first paragraph explains the second one

I'm similar to you, in that I don't drink cheap...if I'm gonna do it, I do it properly!
21 units in 10mins is insane! I can almost match it though...I went to a pool party in the summer and took a bottle of tequila, as well as some beers, ciders and Jagermeister. I met a girl there who was fit as anything who also had tequila. We started out with drinking games, having it with the salt and lemon etc, but after 15mins or so we were just swigging from our bottles and talking...once they'd been finished off, we split the bottle of Jager (had it as bombs with red bull), then started dancing and kissing by the pool...then we both passed out and fell in! Another girl there was a trained lifeguard and pulled us out >_<
That's the quickest I've ever got myself wasted...and I regret nothing

EDIT: @Erginho - I have one that never fails. Get a pot of full fat cream (I use Elmlea), 2 bananas and a drop of honey...blend together into a smoothie (ice optional) and voila...it's not the healthiest, but alcohol leeches potassium from you, so the bananas replace that. The cream and honey have a reason for helping too. My mum saw it on a TV show once and, like I said, it always works.