If you want a cheap(ish) capable charger that's available in the UK try this one
http://www.logicrc.com/?ItemId=O-FS-L120P&s=c:0,c:40 It's a good charger (180W charging), up to 12S (and designed to charge two packs at once, it even comes with 2 balance lead adapters (so 4 in total)), at up to 10A.
It's simple to use, works well, and is capable (I have one by the way). It's only £124.99, though as I work in a model shop, and we have them in stock; if you give me a few days, (and some funds through Paypal

), I could get one for you for £82.50 + postage. I could also do a 20A power supply if you needed one (£35.99 normally), though with my *magic*, £27. Those are Trade + VAT prices, i.e. the best that I could get them for if I wanted them myself.
PM me if you want to.