You're not looking hard enough!
The HP 2475W is a) a pretty damn good 24" IPS panel & b) is available direct from HP for £375+VAT.
TFT central review: www tftcentral co uk /reviews/hp_lp2475w.htm
HP Link: (it's in the small business section, but don't let that stop you): h10010 www1 hp com /wwpc/uk/en/sm/WF05a/382087-382087-64283-3884471-3884471-3648442.html
(Can't post the URLs completed as I'm a newbie...)
NB. Pay via QuidCo & you can get 3% cashback, plus a 10% off the asking price voucher. (I managed to get 18% off sticker when I bought mine, since the cashback was higher, but
YMMV.) Of course cashback is not always reliable, although they paid out for me with no problems. Still, you get the 10% off anyway, so that's £340+VAT ish for a 24" H-IPS monitor. Will that do?