Following the crash, a record of Mr Spencer's flying experience was discovered among his papers that was different from the hours recorded in the official log submitted for his licence.

BBC: Fatal helicopter flight instructor Ian King found guilty

Jurors have also been told by the prosecuting barrister Martin Goudie that phone records, emails sent by the businessman, fuel purchases and weather conditions also appeared to support the unofficial record rather than the official log certified by Mr King.

BBC: Rudding Park death flight pilot 'mad keen' on flying

The officer concerned reported the incident to his superiors and the official police log, which appeared to contradict Mr Mitchell's story, was later leaked to the media.

BBC: Andrew Mitchell