If you're looking for a cheap 19" monitor, check out this deal. Just under 8 quid for the monitor and the rest on delivery. I have not bought one as i don't need a monitor, but it's a great price if you don't mind a no frills monitor.
I have also come across some 1p LCD tv's on this site , so that might be worth checking out! 37" is about £30 delivery and the 42" is about £50 delivery, or free to collect. It could be a misprice, but if you are around the MK area, might be worth giving it a shot. Please note, they are HD, but DVI connection and not HDMI i believe.