Elton John and husband David Furnish said this week that they were overwhelmed by the positive response they've received to their wedding.

The couple, together 21 years, exchanged vows at their home in Windsor, Berkshire, South England on Sunday.

Their two sons, Zachary, 3, and Elijah, who turns 2 next month, attended the ceremony.

John and Furnish, a filmmaker, entered a civil partnership in 2005. While gay couples started marrying in Britain in the spring, those in a civil partnership had to wait until last week, when it became legal to convert civil partnerships to marriage.

John posted a photo on Instagram of newspaper coverage of his nuptials along with a message of gratitude.

“We're utterly overwhelmed by and overjoyed by all the kind messages of support we've received from people around the world. Massive thanks to everyone from the bottom of our hearts!” John wrote.

“We're grateful and privileged to live in a country where it isn't illegal to be gay and where marriage equality is a reality. Let's all stand up for LGBT people living around the world who deserve the same rights. #ShareTheLove,” he added.