CCTV shows Heathrow chin-up assault suspect
A man punched and racially abused a Polish woman on a bus at Heathrow Airport, police have said.
The man hit the woman in the face after she had earlier intervened to stop him racially abusing another woman at a bus stop.
CCTV pictures released by police show a suspect performing chin-ups on the 423 bus before getting off at Hounslow.
He is described as a light-skinned Asian man with "untidy stubble".
The woman was on her way back from a night shift at 06:15 GMT on 25 February when the attack occurred.
The Metropolitan Police said the attacker followed the woman on to the bus and racially abused her before punching her in the face.
Police have appealed for help to find the suspect, who is described as 5ft 9in tall and being of medium build.