Approximately 13.3 per cent. of records on the National DNA Database are estimated to be duplicates or replicates. It is not possible to break this figure down by age.
On 16 December 2008, my right hon. Friend, the Secretary of State for the Home Department, announced that the Government would take immediate steps to remove the DNA profiles of children aged under 10 from the NDNAD.
The replication rate of records on the Police National Computer is not known. When a replicate record is discovered, the records are combined to make a single definitive record.