Summary
John, one of Britain's most prominent musicians and gay celebrities, announced the wedding by posting an invitation on the social networking site Instagram.
John and Furnish's civil partnership was one of the first to take place after they became legal in 2005 .
John has often used his status in the music world to make statements on lesbian, gay, bisexual and transgender equality.
Gay couples in Britain have been allowed since 2005 to enter "civil partnerships", which confer the same legal rights as marriage.
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