Identifying children at risk who arrive from abroad via the UK's airports has long been a problem for the authorities.
For the past three months, the immigration service and the Metropolitan Police's Paladin team, which was set up to tackle child trafficking, have been trialling a system to spot vulnerable children, by tracking flights from Jamaica.
The Kingston Pilot, which ended last week, was designed to test how airlines, the police and immigration officers could work together to share information and monitor all children, especially those who are unaccompanied.
Pilot country
Detective inspector Gordon Valentine, who heads the Paladin team, says: "We want to reach the stage where they [vulnerable children] do not even board the plane."
Jamaica was chosen as the pilot country because of its limited number of routes into the UK; airlines fly only to Heathrow, Gatwick and Manchester airports. Jamaican nationals require visas to come to the UK, which means those travelling from the island must provide details of where they will be staying and with whom.
The immigration service says it would be much more difficult to monitor children from, say, Nigeria, because flights from its main city. Lagos, arrive all over the UK.
Valentine says the Kingston Pilot will be evaluated to see whether it could be rolled out to areas of "greater concern".
Airlines have a crucial role to play in making the process work. A spokesperson for the immigration service says they have been cooperative, despite initial concerns that check-in staff could be targeted by criminal gangs as a result.
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