UK scientists were forced to revise their plans to track down the missing Beagle 2 today – just as America celebrated the Nasa probe’s successful landing on Mars.

A specialist team of experts was tonight trying to work out why the Beagle 2 Mars probe has so far failed to make contact with Earth, as efforts to communicate with the craft continued.

BEAGLE 2’s chief scientist said last night he was not giving up on finding the missing British Mars probe.