Officers want to speak to this man after another was threatened with a knife.

At around 7.50am on Monday, December 19, the suspect approached the victim, who is in his 20s, on a footbridge in Elm Grove, Westgate, when he pulled the weapon.

He is thought to be around 24 years old, has black hair and was wearing a black jacket and grey trainers when he approached his target on the crossing over a railway line.

Detective Steve Tring said: "Although nothing was taken, and the victim was not harmed, this was obviously distressing for him.

"We are keen to hear from anyone who might have been in the area at the time of the incident, or if they recognise the suspect pictured."

Anyone with information should call police on 01843 222 289 quoting ZY/46309/16.