Police have launched a manhunt after a staff member at Gravesend railway station was threatened with a knife earlier this month.

The incident happened around 3pm on November 5 when a man tried to push through the barriers at the station.

When a staff member stopped him, the man pulled a knife from his bag, threatened the staff member, and began shouting.

Officers have now released an image of a man they believe could help with their investigation.

Anyone who recognises him is asked to contact British Transport Police by texting 61016 or calling 0800 40 50 40, quoting reference 2400139265.

Information can also be given anonymously to Crimestoppers on 0800 555 111.