Just noticed this in Asda Old Kent Rd, 3x1 litre bottles of Listerine Coolmint for £4! Even the cashier couldn't believe it.
Have to admit I initially thought it was for one bottle as they are shrink wrapped in a box (looks a bit like someone couldn’t be bothered to unpack them) but it has a barcode on the side that says 3 x 1 litre. They had loads there, marked at half price on the shelf edge, (i.e. was £8).
They were on a special aisle, not with the normal oral care stuff, on one side they had garden and bbq stuff and on the other lots of offers on things like hand wash, shampoo and fusion razors (like 1 power razor + 5 blades for £10!)
Seems to be a fiver for 1 bottle at Boots.com.