Just been to B&Q and noticed they had reduced their 25kg bags of cement to £1. They are stated as out of date.
People will shout "store specific", and they may be right, but on the assumption that my local had these delivered, with the same use by date, in bulk at the same time as numerous other B&Qs then I'm guessing there's a fair chance they will be available elsewhere.
Anyway, all I'm doing is highlighting the fact that there may be £1 bags of cement out there so just a heads up that if you need some, it may be worth popping into B&Q to have a look.
Found in Crawley store.