Recommend this LG 24EA53VQ, it is only £119.99 now, down from £138.99. http://www.amazon.co.uk/exec/obidos/ASIN/B00BSOT2LA/buyin-21 Seems good for 24". Also has VESA which is important to some people.
Get a 23inch for that resolution. At 24inch, things will look a bit strange. Usually 24inch is for 1920x1200, as mentioned by docodine.
Huh? Why would an extra inch make any difference in terms of how 'strange' it looks? Just because 1080p res is more common on 23" displays than 24" displays and 1200p monitors have traditionally been 24" doesn't mean that always has to be the case. Bigger is almost always better until you get to about 27" IMO anyway, so go with 24" if you can. Personally, while it's initially noticeable I find I got used to 1920x1080 on a 24" screen pretty quick and it doesn't bother me at all now.
Might not be as relevant to you, but I am very happy with my 3 Acer 24in B243PWL monitors which are 1920x1200 and have entry level 6 bit IPS panels. Looks like it's a bit more expensive than your price range, but I'm not horribly familiar with UK resellers and I really couldn't find it so it might be worth looking.
For me it's all about the Dell U2412M. Currently running 2 of those, and looking at getting a 3rd. As someone who does a lot of video editing and animation. That extra bit of vertical resolution makes so much difference!!
