Major decisions would be made here in the heart of Scotland's Secret Bunker! Senior ministers would be evacuated here from Edinburgh along with their key civil servants.

The offices of the emergency services, scientific advisors, the Met office and computer staff would surround the main command floor.

There is an office here for the Minister of State. The Secretary of State would be housed upstairs in his own suite. On the main floor senior staff from the major ministries would keep in touch with the outside world and up to the minute status information would be shown on the giant map displays and wall charts.

The sinister war telephones give a chilling centre piece to the operations room, as on these, the final three minute warning would be received in the bunker.