From David Cameron, Office of the Prime Minister:  The resolution specifically authorises notifying Member States to use all necessary measures to enforce a No Fly Zone and to protect civilians and civilian populated areas, including Benghazi.

The Cabinet has met this morning.

They have agreed that the UK will play its part.

Our forces will join an international operation to enforce the Resolution if Gaddafi fails to comply with its demand that he ends attacks on civilians.

The Defence Secretary and I have now instructed the Chief of the Defence Staff to work urgently with our allies to put in place the appropriate military measures to enforce the Resolution – including a No Fly Zone.

And I can tell the House that Britain will deploy Tornadoes and Typhoons as well as air-to-air refuelling and surveillance aircraft.

Preparations to deploy these aircraft have already started and in the coming hours they will move to airbases from where they can start to take the necessary action. …

There will be a clear statement later today setting out what we now expect from Colonel Gaddafi.  (photo: Getty)

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