A report from the Equality and Human Rights Commission (EHRC) says that current law discriminates against gay people and is not supported by public polls.
In England and Wales, the UK government has announced plans to hold a consultation on the future of civil partnerships and marriage. As these are devolved issues, the consultation does not apply to Scotland.
However, polls of the Scottish public have shown rising support for allowing gay couples to marry. In 2006, a poll found that 53 per cent of people supported same-sex marriage. In 2009, this figure rose to 62 per cent.