Sainsburys have Huggies Newborn Size 2 nappies - the carry pack of 40 on sale for £1 per pack.
The 35 pack still scans at £5.98, so be careful what you pick up !
(The shelf ticket was for the 35 pack at £5.98; there was no ticket for the different pack)
The packs look identical, other than the pack size being slightly different ... so you may have to rummage through the shelves !
(I'm not sure if there's a similar offer on the size 1 nappies ... they only had the 27 packs in my store, which were labelled up at full price on the shelf edge - but I guess if you can find a pack with a different number of nappies in, they might scan up cheaper, too!)