London: Floor plans of the UK's Mi6 or the Secret Intelligence Service's central London headquarters were lost by building contractors during a refurbishment, the media reported.
The BBC said that the missing plans were not classified or intelligence documents, but the pages did hold sensitive details on the layout, including entry and exit points. Most, but not all, of the documents were recovered inside the building after it was noticed they were missing, it added.
Balfour Beatty, the company working on the refurbishment at the headquarters in Vauxhall, is reportedly no longer working on the project.
The documents, which went missing a few weeks ago, were produced and owned by Balfour Beatty and designed to be used for the refurbishment.
