It is not the first appeal made since the films were released but there has been a 16% rise in trespass offences across the country in the last year, according to BTP.

Authorities have been working to improve fencing and signage in the Glenfinnan area to direct tourists to safe vantage points for photographs.

Sergeant Kevin Lawrence said: "Tourists from all over the world travel on the Jacobite steam train during the summer months to visit the famous Glenfinnan Viaduct.

"Alarmingly, visitors often get off the train at Glenfinnan and walk back along the line to take photographs. This is extremely dangerous.

"The scenic, rural area also attracts many bikers and other tourists also travelling by road to see the viaduct.

"When they are caught up in the excitement of their trip, people may not realise that what they are doing is trespassing on the railway, risking the lives of themselves and other people who could be travelling on trains passing through.

"Over the years we have worked with Network Rail to improve fencing and signage in the area to encourage tourists to get to safe vantage points for photographs without accessing the lines.