Police appeal to ‘Good Samaritans’ who may have helped missing Bushmills man after Co Antrim crash
Missing Bushmills man Mark Dinsmore
Monday 02 November 2026
Police searching for missing Bushmills man Mark Dinsmore have issued a direct appeal to two members of the public who they believe may have helped him from his car following a road traffic collision in Ballymoney.
The 50-year-old has not been in contact with family or friends since Saturday 24 October, when his grey Audi A4 was involved in a collision with a grey Nissan Juke on the Ballybogey Road at around 6pm.
Officers believe Mark sustained injuries in the collision and have serious concerns for his welfare. They are now particularly keen to speak to two men who may have stopped at the scene and spoken with him.
Police have stressed that the men are not suspected of any wrongdoing and believe they was acting as Good Samaritans.
Police seek man who may have helped Mark
Local Policing Inspector Armour said officers returned to the Ballybogey Road on Saturday 31 October to speak with passing motorists in the hope of identifying people who had travelled through the area exactly one week earlier.
Inspector Armour said:
“On Saturday 31st October, we returned to the Ballybogey Road and spoke with passing drivers, in the hope that they may have been in the area the week before.
“Those we spoke to were really keen to help with our enquiries. We now believe that two men, who had been travelling in a light-coloured car, may have stopped and spoken with Mark after the collision, and want to appeal to them to get in touch. I want to emphasise that there is no suspicion of wrong-doing on their part – we think that they were ‘Good Samaritans’ who helped him from his vehicle.
“If you were travelling along the Ballybogey Road that evening and came across the collision between Mark’s vehicle and a grey Nissan Juke, please contact us.
“We also continue to appeal to anyone with relevant dash-cam footage, or any details relating to the collision or Mark’s whereabouts, to come forward. Every piece of information, no matter how insignificant it may seem, could help.”
The appeal represents a potentially important development in efforts to establish what happened to Mark after the collision and where he may have gone.
Search continues amid serious welfare concerns
Mark is described as approximately 5ft 8in tall, of medium build, with short dark hair.
When last seen, he was wearing:
• A red coat
• A white T-shirt
• Jeans
• White trainers
Police have been working alongside voluntary search and rescue partners, while members of the public have also assisted by checking sheds, outbuildings and unoccupied properties.
Inspector Armour thanked those involved and highlighted the importance of the community's support to Mark's family.
The inspector said:
“We are working alongside voluntary search and rescue partners, and members of the public have assisted with the search by checking outbuildings, sheds and unoccupied buildings. Mark’s family are so appreciative of every single person who has come to their aid.”
How the public can help
Police are asking anyone who was travelling along the Ballybogey Road at around 6pm on Saturday 24 October to consider whether they witnessed the collision involving the grey Audi A4 and grey Nissan Juke.
In particular, officers want to hear from the two men who may have stopped and helped Mark, as well as anyone who has relevant dash-cam footage or information about his movements afterwards.
Anyone who can assist is asked to contact police on 101, quoting reference number 431 of 25/10/26.
With Mark still missing more than a week after the collision, identifying the men who may have spoken to him at the scene could help police establish his condition and movements immediately afterwards, providing vital answers for his increasingly concerned family.
