制作公司：
发行公司：
- Essential Entertainment (2008) (worldwide) (all media)
- RCV Film Distribution [荷兰] (2009) (Netherlands) (theatrical)
- Lightning Home Entertainment [美国] (2009) (USA) (DVD)
特技制作公司：
- Artem Ltd. [英国] (all physical SFX & prosthetics)
- MotionFX Ltd. [英国] (visual effects) (titles and grade)
- Post Office
其他公司：
- MotionFX Ltd. [英国] camera equipment provided by/post-production
- Audiolink Ltd. walkie talkies
- Gearbox (Sound and Vision) Ltd. [英国] additional Pro Tools Systems Supplied by
- HireWorks FCP editing equipment rental
- Sapex Scripts [英国] post-production script services/post-production services
- Synxspeed [英国] sound post-production (sound re-recording)
- Digilab Services digital film workflow
- P.N.C. negative cutting
- The Sound Design Company [英国] post-production sound services
