Reasonable budget LCD monitor -
Dell ST2220M 21.5" currently has 25% off and free shipping.
However I have found that £60 cash back is being offered by Dell when you trade in an old monitor (working and with power adaptor and main lead).
Don't forget Quidco is currently at 10% making the possible price about £47 (ish).
Hope this helps someone. 25% off ends today though!
P.S. - You can also get to the URL for the cash back via the Dell website (in the monitors section!)
Track the progress of your recycled monitor here:https://rewardandrecycle.trade-in-platform.com/Public/Login.aspx