Ike Ekweremadu, 60, and Beatrice Nwanneka Ekweremadu, 55, were both charged with conspiracy to arrange travel of another person with a view to exploitation, namely organ harvesting, police said.
Ekweremadu is an opposition senator in the southern state of Enugu, and also a former deputy senate president.
Police said they had been alerted to the alleged plan following reports made of possible offenses under modern slavery legislation. The child involved has been taken to safety and work was under way to provide additional support.
The couple appeared at Uxbridge Magistrates’ Court in London where the court was told the child involved was a 15-year-old boy, the BBC reported.