Just been in Tesco Extra @ Seacroft, Leeds.
They have the pictured Targus 15-16" laptop bag and mouse marked up on the shelf at £38.00 reduced to £19.25, but it actually scans at £4.81!
They also have the slimline version (doesn't open clamshell style) with a similar starting price, that scans at £4.99!
Still marked up at £19.98 on the website, so in-store only
Forgot to add earlier - it fits my 17" Dell laptop comfortably, so if you've got a large one (!) it's the bag for you :-)