Sainsburys in Bracknell and Nationwide are selling their Persil Colour Tablets 48 Pack for £4.10 instead of £5.85. The reason is that the Unilever are supplying the retailers and supermarkets with a new (value?) 40 tablet Pack (20 washes) but are charging the full retail price of £5.85. So grab the larger packs while you can.
Persil Colour Tablets 48 Pack (24 Washes) - £4.10 @ Sainsburys (+ word of warning)