A detective has appealed for help finding a missing 14-year-old boy and his mother who have not been seen for a year.
Moses John is at the centre of family court litigation - and police and social workers say he needs to be found as a matter of urgency.
The youngster and his mother, Pauline Watson, 46, have disappeared from their home in Northamptonshire and could be in London, social services officials said.
"I am appealing for Moses and his mum, or anyone who knowns where they are, to contact us and let us know they are safe and well," said Detective Sergeant Nickie Deeks, who works for Northamptonshire Police.
"We have carried out extensive inquiries in the last 12 months - conducting interviews, searches and online checks."
She added: "These inquiries have primarily focused on part of London where we believe they could be living."
A spokesman for Northamptonshire County Council, which has responsibility for Moses' welfare, went on: "We would like to make contact with them as a matter of urgency to make sure they are both safe and well."
He said Moses is black and about 5ft 9ins tall.
Moses' mother is black and around 5ft 7ins tall.
The spokesman said Moses' mother was thought to have links to areas of London including Croydon, Islington, Merton, Sutton, Southwark and Lambeth.
A High Court judge has given permission for Moses' identity to be revealed.
Children at the centre of family court proceedings are normally not identified - and their cases are usually analysed at private hearings.
Mr Justice Keehan is scheduled to make a public appeal for help find Moses and his mother at a hearing in the Family Division of the High Court in London on Monday.
He wants journalists to attend the hearing in Court 41 at the Royal Courts of Justice in the hope that publicity will lead to Moses being found.
Social services staff at Northamptonshire council said the judge had agreed to take ''the exceptional step'' because of the level of concern for the teenager's well-being.