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- 7 - . he should arrive. Copies of the contingency plan prepared by the Metropolitan, Thames Valley, Essex and Sussex police forces will also be circulated to chief constables throughout Great Britain. To prepare for the possibility of Amin arriving at Prestwick, Turnhouse or Renfrew, the chief constables of Strathclyde and Lothian and the Borders .are in contact on a contingency basis with G.O.C. Scotland. If the COBR had not been activated as a result of notification from HATS, it would be activated the moment news of Arnin's arrival was received in Whitehall. Timing of announcement 2k. Contingency planning has 'so far been confined to the departments concerned and senior officers of the police forces named in the preceding paragraph. It is now being extended to the British Airports Authority. We have reached the point where detailed planning cannot be taken further without involving many more people and imminent risk of premature disclosure. We recognise that there axe other political considerations to be taken into account; but., from the point of view of having all these plans completely prepared and ready for rapid and efficient activation, the sooner it can be announced that Amin will not be permitted to enter, the better. Police : mutual support 25. The Metropolitan Police and the Sussex Police are satisfied that they could carry out an operation without calling on other forces for support. The Thames Valley Police and the Essex Police would need some support from the Metropolitan Po?.ice, in the event of an operation at Erize Norton or at Stansted. That support has been agreed and arranged. It seems probable that, if Amin landed anywhere else than Brize Norton, Heathrow, Stansted or Gatwick, the local force would need some support. Arrangements have b-een made to ensure that any request for such support would be dealt with immediately and the support organised v/ith the least possible delay. 26. Inquiries that have been made disclose no indication of hotel bookings for Amin and his party in London, or in the neighbourhoods of Stansted or Gatwick. Nor is there any indication of attempts to book cars for transporting /jnin from an aircraft to London. Cnce an announcement of the decision to exclude Amin had been made, it would be easier to keep these inquiries up to date and to make provision for finding out if cnv attempts to make bookings are being made.