This looks rather interesting- a new British movie called S.N.U.B. which stands for Secret Nuclear Underground Bunker. In short a Brit politician finds out about an impending nuclear attack on London and he flees- along with an assortment of other people- into a bunker to save himself. The bomb goes off and the radioactivity mutates a group of prisoners who escaped in the aftermath of the blast. Said mutants then set about attacking the survivors in the bunker.
I think I'm going to enjoy this one. It's available to pre-order on DVD now.