went to Boots today and they had James Brown London Photo Fabulous shampoo/conditioner and hairspray on offer at £1.75 (down from £6.99 or 2 for £6 which is a bit weird!)
anyway if you go to the advantage card points machine there are 150 points on any James Brown London hair product - so the shampoo etc. cost 25p in real terms!
no idea if national, worth having a look if you are in Boots. not showing online.