Policeman (The Faceless Ones)

An unnamed policeman was patrolling Gatwick Airport on 20 July 1966.

Biography
When the Second Doctor and his companions arrived in the TARDIS, materialising on the runway in the path of an oncoming airliner, the policeman tried to stop them, but the Doctor told his companions to scatter.

The policeman chased after Ben, who was closest to him, but Ben eluded him. He went on his way, still searching in vain for his quarry. (TV: The Faceless Ones)