Shaune Jones has not been heard from or seen since June 2017.
Together, his family and Missing People charity have renewed an appeal for information today (July 26).
"Today would (have) been Shaune’s 50th birthday," said his sister Suzi.
"He last attended a medical appointment on June 27, 2017, and hasn’t been seen or heard from since.
"Shaune suffers from severe mental health issues, he has children and a granddaughter that miss him dearly.
"We as his family have become majorly concerned for his safety and would love to know he’s safe and well so Shaune or anyone that may have seen him we just want you to know that we love and miss you and here if you need us and if anyone has any info no matter how small please make contact in confidence."