They all seemingly disappeared without a trace and despite extensive police investigations at the time they remain missing.
Missing People, the UK charity dedicated to reconnecting missing people and their loved ones, continues to appeal for information on their whereabouts and urges them to make contact. Its confidential helpline is open daily between 9am and 11pm to anyone calling 116 000.
The helpline is for people who are thinking about leaving home, who are currently missing, who have a missing loved one, or families and young people affected by exploitation. It is also how members of the public can pass on information about sightings.
The charity can also be contacted by emailing [email protected] or visiting the Missing People website.
7. Bruce Gapper
Bruce Gapper, 40, was reported missing from his home in Groves Hall Road, Dewsbury Moor, on May 16, 1999. While still officially classed as a missing person, police said in 2015 that the investigation was now being treated as a murder enquiry. Quote reference 99-000462 when passing on any information. Photo: Missing People
8. Sean Thompson
Sean Thompson he left his home in Knottingley on March 18, 1993 to go to the job centre. It was the last confirmed sighting of the 25-year-old. Quote reference 97-000580 when passing on any information. Photo: Missing People
9. Tuan Arh
Tuan Arh was 17 years old when he was reported missing from Bradford on September 10, 2020. Quote reference 20-004388 when passing on any information. Photo: Missing People
10. Bang Dihn Tran
Bang Dinh Tran was only 15 when he was reported missing from Bradford on September 4, 2020. Quote reference 20-004233 when passing on any information. Photo: Missing People
11. Ismail Ali
Ismail Ali was 46 years old when he was reported missing from Bradford. He was last seen in Gulams, on Cumberland Road, Lidget Green, on the afternoon of Friday, May 29, 2020. He has links to the Dewsbury and Batley areas, as well as Blackburn. Quote reference 20-004239 when passing on any information. Photo: Missing People
12. Tran Von Hong
Tran Van Hong, 43, was reported missing from Bradford on July 1, 2020. Quote reference 20-003188 when passing on any information. Photo: Missing People