Montgomery Lewis, who is also known as Monty, was last seen at their home in Shrewsbury on Monday, December 8, 2025.
Officers say Monty has blonde, wavy shoulder-length hair, is around 6ft 3in tall, and has a slim build. Police have also released new images in an effort to help locate them.
It is believed Monty took a black rucksack and was wearing a light grey padded anorak with a faux fur hood when leaving their home.
Police say they believe Monty could be anywhere in the UK, and are urging anyone who may have seen them or has information about their whereabouts to come forward.
Monty was reported missing to police on Wednesday, February 11, after not contacting family for some time.
Anyone with information is asked to call 101, quoting incident number 148i of February 11, 2026.
Officers say even small pieces of information could help them understand where Monty may have travelled since December.
