A mother whose baby is thought to have been abducted 19 years ago said she “lived in hope” that someone can give some information as to his whereabouts.
Five-month-old Ames Glover went missing from the back seat of his father's car in South Road, Southall in west London on 5 February 1990.
Shanika Ondaatjie, 41, said: “I don't care if it's good or bad, I just need to know.”
A police spokesman said he was convinced someone knows what happened.
Ames' case is one of the longest-running abduction cases in the UK.
The baby's father Paul Glover, who is of Ghanaian descent, told police his son had been snatched from a locked blue Ford Sierra in the 20 minutes he left the baby alone to withdraw money from a cash point and get a take away.
Appealing for information Ms Ondaatjie said: “Although I have tried to move on, there will always be a part of me that cannot.
“I don't care if it's good or bad, I just need to know.
“Sometimes I see young boys in the street and can't help but wonder if one of them is Ames.
“He would be 20 years old this year and I have lived in the hope that one day I will find out where he is or what became of him.”
A huge police investigation was launched over Ames' disappearance during which about 2,000 people - including both Ames' parents - were interviewed but no charges were ever brought.
In June 2002 after pressure from Ames' mother, Scotland Yard's Racial and Violent Crime Task Force took over the investigation.
In 2003 officers travelled to Ghana in west Africa after a tip-off the baby may have been taken there.
However, in spite of a £10,000 reward offer for information their inquiries in Ghana did not yield any result.
Det Sgt Peter Birdsall said: “I am convinced someone knows where he is or what happened to him, it has been a long time and allegiances will have changed.
“I would also appeal to their consciences and think of the agony Shanika has been going through.”