In store in Waterlooville today, unsure if nationwide.
Plenty of DVDs for £4.71, or £9 for two. Picked up Moon and District 9, cheapest I could find elsewhere about £6. Large collection, mainly clearance, but some gems, Layer Cake and Cloudy with a Chance of Meatballs, too.
Lots of big banners, seems logical it could be in more stores, but don't go out of your way.