At about 1pm on 17 January, the masked man entered the agency in Ayr Road, Newton Mearns, brandishing a knife, Police Scotland said. 

He took a “five-figure sum” of an unnamed foreign currency and drove south in a silver vehicle, according to the force.

The suspect is described as white, 6ft 2in tall, slim and wearing a white mask, black beanie, light long-sleeved top, navy-blue trousers and white shoes. 

Police Scotland is appealing for anyone with information to come forward. 

Detective Constable Mark Milroy of Glasgow CID said: “Nobody was injured but this was a frightening experience for staff and customers alike.

“Extensive enquiries are ongoing to identify the man responsible, including reviewing CCTV from the area.”

Anyone with information should call 101 with incident number 1534 of 17 January, or call Crimestoppers anonymously on 0800 555 111.

A Barrhead Travel spokesperson said: “The safety of our colleagues and customers is always our number-one priority.

“Most importantly, our team did not come to any harm but were naturally shaken. We are working with the police to support their investigation.”