I can vouch for that as well, the Edmonton Green branch had most of their bottled range on 4 for £5 today, sadly with very few micros only Purity I think. Down here the 4 for £5 offers only ended with the last budget when it became 2 for £3. I wonder if Tesco will follow suit.
Actually that is wrong, ASDA used to do 3 for £4, it was Tesco that was the last to do 4 for a fiver. I'm getting my supermarkets confused!