Hundreds of British children, some as young as five yeas old, are being forced into arranged marriages according to a report by the BBC.
More than 400 children in total received help from the FCO's Forced Marriage Unit (FMU) in 2011, the BBC said.
The FMU do not release details of individual cases involving minors, but say the majority of cases involve families from South Asian countries including India, Pakistan and Bangladesh.
Forcing somebody to enter into marriage is not technically a criminal offence in England, Wales and Northern Ireland, although it is in Scotland.
Forced Marriage Protection Orders were introduced in 2008, through which victims, friends and officials can theoretically gain some protection, by making it possible to jail anyone breaching an order for contempt of court.
Prime Minister David Cameron has said he wants to see forced marriage criminalised, however. A public consultation on criminalising forced marriage recently concluded and will be published later in the year.
The FMU produces a wide range of educational materials for officials, schools and young people, including a series of animated documentaries made by the British High Commission in Islamabad (see above).
In its guidance the FMU says:
"Young people, particularly girls, forced to marry or those who may be forced to marry, are frequently withdrawn from education, restricting their educational and personal development.
"They may feel unable to go against the wishes of their parents and be threatened with disownment if they do – consequently they may suffer emotionally, often leading to depression and self-harm.
"These factors can contribute to impaired social development, limited career and educational opportunities, financial dependence and lifestyle restrictions."