You do not have to wait 24 hours to report someone missing If you think someone is in danger you can report them missing right away. Reporting a missing person If the missing person is in immediate danger, is a young child or vulnerable to harm, call 999 now. If you have a hearing or speech impairment, use our textphone service 18000 or text us on 999 if you’ve pre-registered with the emergencySMS service. If you don’t think they are in immediate danger you can: report a miss