West Yorkshire Police have also released a statement to mark the 20 year anniversary of the disappearance of Sean Thompson.
“Jean and Ruth have been waiting twenty years to find out what’s happened to their son and brother and I would like to facilitate their reunion.
“It is very unusual for someone to not be seen or heard of for this amount of time. Someone will know where Sean is.
“We have digitally enhanced a photo of Sean through the age progression process to show what he could look like now twenty years on.
“Take a look at the image and let us know if you recognise him or may have seen someone who looks like this.
– DCI Neil Lineham, of West Yorkshire Police’s Homicide and Major Enquiry Team
“Sean if you are watching, listening or reading this please get in touch so we know you are safe and well.
“Sean had a distinctive gait and suffered from the medical condition Metatarsus Varus meaning he walked on his tip toes.
“It is possible that he has received treatment for this condition since his disappearance and no longer walks in this way.
“I would like to speak to anyone who may know someone who does walk in this fashion or who has previously walked in this way and they fit Sean’s description to contact the police.
“I would like to stress Sean has not committed any criminal acts.
“My investigation is to try and locate Sean, a young man who was reported missing from home.
“I would like nothing more than to reunite this family with Sean but if there is any reason why this isn’t possible I would like Sean to contact the police or the Missing People charity in the strictest of confidence.”
Anyone with any information about Sean’s whereabouts is asked to contact West Yorkshire Police via 101.
For information about the search for Sean follow the hashtag #findseanthompson on Twitter.
Twenty years after a man from West Yorkshire was reported missing, his family have made an emotional plea for information about his disappearance.
Sean Thompson was 25 when he left his home in Knottingley on March 18 1993 to go to the job centre.
Detectives investigating his disappearance have digitally enhanced an image of Sean to show what he could look like today at the age of 45.
Ruth Thompson-Douglas, Sean’s sister, said: "Sean's now been missing for 20 years and they always say times a healer, but for us it hasn’t been, as we have no idea where Sean is, it's like he's literally fallen off the face of the earth.
“We live everyday hoping he will walk back into our lives and we will know he is safe.
“Sean was very quiet but would do anything for anyone; he was very kind, friendly and caring."