Indeed. If they can't link it to anyone or even any time, then it can't be used ...

redcalx on Dec 24, 2018 | parent | context | favorite | on: UK police release airport drone suspects, admit th...

Indeed. If they can't link it to anyone or even any time, then it can't be used as evidence. Although it may be a fruitful line of enquiry if was one of the problem drones from last week. E.g. tracing sale of parts from serial numbers.