Anyone with information is asked to contact British Transport Police on 0800 40 50 40.
– PC Roy Ward, Investigating Officer
The man then calmly walked away from the woman towards platform four and onto a train.
Luckily the victim was not left with any visible injuries, but this was a shocking and unprovoked assault.
We do not tolerate violence like this anywhere on the rail network and I'd urge anyone who recognises the man pictured, or who may have witnessed what took place, to come forward and assist officers in this investigation.
Police are trying to trace a man seen on CCTV after a woman was punched in the face at Willesden Junction station. The 23-year-old victim from Brent was attacked on a platform around 1:45pm on Tuesday, 13 August. A man walked past and then suddenly turned around and assaulted her.
A landlord has been fined for building 12 flats in Willesden without the necessary planning consent.
A fine is not that unusual but this fine - almost £1.5m - is believed to be Britain's biggest confiscation order for a planning offence.
Salah Ali was taken to court by Brent Council, which claims he has flouted regulations in the borough for the past 10 years. More now from Paul Brand.