Monitor Upgrade

Hi,

I am thinking of buying a new monitor, the one i currently have it a CRT monitor. The colours are a bit messed up and it's a little old now.

I'm thinknig of upgrading to a flat screen one, but as i'm currently still at college i'm wanting to spend as little as possible. Can anyone recommend some monitors for cheap prices? In the uk would be best, as shipping would be an extra cost.

Thanks.