seeing picture quite skeptic like movies agenda appreciate scared thinking like writer also afraid would like part miniseries  farfetched concept little relation real world poor execution beginning says this film fiction events portrayed information uk emergency planning based extensive research general feeling sold idea taught lesson civil awareness message conveyed obvious start coming were prepared use real places scenario could happen  plans  add disturbing effect movie have even cynical viewers movies perspective society stays away heartbreaking personal moments convey message none romeojuliet drama were used to