An instructional film released by the UK Warning and Monitoring Organization which depicts its operations in the lead-up to and aftermath of a hypothetical nuclear attack on the United Kingdom.

• Interfilm (London)
• Central Office of Information for Home Office
• John Welsh
• Tony Thawnton
• Edward Underdown
• Valerie Van Ost
• Michael Smee
• Larry Martyn
• Guy Standeven
• Ian Patterson