Pictures about the Gleneagles summit were left in a cab

Chief Superintendent Brian Powrie, of Tayside Police, was in London to attend a range of meetings.

He left a series of aerial photographs in the back of a taxi just before Christmas.

A force spokesman said the photographs - which were later returned - were not of great significance.

He said: "Some aerial photographs of the Perthshire countryside which were not of a sensitive nature were accidentally left in a black cab.

"The photos were later handed in to the Metropolitan Police by the taxi driver and returned to Chief Superintendent Powrie."

Pass checkpoints

The senior officer revealed in December that police will issue ID cards to eight-year-olds as part of security measures surrounding the summit.

As many as 500 local residents will be asked to carry photographic identification in order to pass checkpoints and roadblocks surrounding the meeting.

Under-eights will not require any ID as they can be included on their parents' or guardians' cards.

Tayside Police said the measures were "standard procedure" for a gathering of the world's most powerful leaders.

Roseanna Cunningham was critical of the ID card scheme

The photo IDs will be handed out to residents of neighbouring Auchterarder.

Mr Powrie said at the time: "Tayside Police is making preparations for a major security operation at Gleneagles Hotel and the surrounding area.

"It is standard procedure for such events and requires those who live close to the venue to carry identification so they can get through any police checks with the minimum of inconvenience.

"This involves a relatively small number of people being photographed and issued with a pass by the police."

However, his scheme attracted fierce criticism.