At the moment it's not against the law to force someone to get married, although people who do it can be charged with other offences like kidnapping.
In the 12 months leading up to April this year there were around 300 suspected cases of forced marriage.
About 200 people were rescued, given somewhere else to live or were brought back to the UK if they had been taken out of the country.
Most of the cases involved young women, and sometimes girls as young as 13, but experts think up to 15% of cases may involve men marrying who don't want to.
Newsround will be showing a special report on this issue on Monday, 8 November.