The UK is sending four Apache attack helicopters to the mission in Libya, after approval by the prime minister.
If called upon, they will allow for swifter attacks on a wider range of smaller targets in urban areas.
The Apache helicopters, normally based at Wattisham, in Suffolk, are expected to go into operation within days.
Downing Street says intelligence suggests Col Muammar Gaddafi is "on the run" and hiding in Tripoli hospitals in the belief he will be safe there.
The Apache helicopters and their pilots, who are part of the Army Air Corps, are currently on exercise in the Mediterranean.
http://www.bbc.co.uk/news/uk-13558056
Note: 27 May 2011 Last updated at 07:17 GMT