TODAY ONLY PAGE HERE: http://www.scan.co.uk/todayonly/index.aspx#7
It's just a few screens down the Today Only page under the heading 'Monitors' and the subheading 'LED Monitors'.
See here for details of how to get free delivery: http://forums.hexus.net/general-discussion/138834-scan2hexus-free-shipping-setup-guide.html
It's the cheapest full HD LED monitor you'll find at the moment... It been on Scan's Today Only many times now at about this price, so it will most likely be on again if you miss it.
You can pick this monitor up for around this price at one or two places if you search Google Products (but they're currently out of stock).
Scan's site says 2 years warranty, though Acer's site says this: "three year carry-in warranty".
Here's a link to the product's page on Scan (but to get it for the quoted price you need to add it to your basket via the Today Only page): http://www.scan.co.uk/products/215-acer-s221hqlbd-led-full-hd-black-widescreen-monitor-5ms-1920x1080-120000001-250cd-m
A few specs...
Model Name/No. : Acer S221HQLbd
Screen Size 54.6 cm (21.5")
Maximum Resolution 1920 x 1080
Colour Support 16.7 Million Colours
Contrast Ratio 12000000:1
Brightness 250 cd/m²
Maximum Response Time 5 ms
Aspect Ratio 16:9
Horizontal Viewing Angle 176°
Vertical Viewing Angle 176°
Adjustable Display Angle Yes
DVI & VGA
Operating Power Consumption 27.20 W
Standby Power Consumption 760 mW
Height 372 mm
Width 508 mm
Depth 195 mm
Weight (Approximate) 4.50 kg