Storage 24

Storage 24 is a 2012 British science fiction horror film directed by Johannes Roberts, and co-written by Roberts, Davie Fairbanks, Marc Small, and Noel Clarke from an original idea by Clarke, who also starred in the leading role. The film co-stars Antonia Campbell-Hughes and Colin O'Donoghue, the film follows a group of people become trapped inside a storage facility with a highly unwelcome guest.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.