Kitchen Devil Control twin knife set.
Seperate these are £6.50 and £4 = £10.50 in Asda. Found in Boston Asda. I'm always on the look out for a bargain with KD knives as they are fantastic. It's rare to get more than a few pence off, so this pair for only £5 is a great bargain. Not sure if its a miss price or not, but grab em while you can