Human rights campaigners say Britain's military is wasting up to 94 million pounds ($143.4 million) a year training recruits who are minors and should end the practice.

Britain is the only member of the European Union and only permanent member of the United Nations Security Council that allows military recruitment from the age of 16.

Child Soldiers International and Forces Watch say it costs the military twice as much to train a soldier recruited at 16 than it does at 18 due to longer training requirements and higher dropout rates.

In a report published Tuesday, they called on Britain's Ministry of Defense to revisit its "outdated" policy of recruiting minors.

The Defense Ministry said it has no plans to do so and doesn't recognize the figures in the report.