Sir Elton John has vowed to continue to "fight for equality for all".

Sir Elton John and David Furnish

Sir Elton John and David Furnish

The 'Tiny Dancer' hitmaker celebrated six years since he and David Furnish got married and 15 years since they entered a civil partnership earlier this week and he marked the anniversary with a call to help those who continue to be discriminated against because of their sexuality.

Sharing a photo from their big day on Instagram, Elton wrote: "Today @davidfurnish and I are celebrating two anniversaries: 15 years of Civil Partnership and 6 years of marriage. Our relationship gets stronger every day, and I am extremely grateful for the love we share and our two beautiful sons.

"However, we are the lucky ones, as millions of gay people throughout the world are discriminated against because of their sexuality. This is a disgrace. We all deserve to love who we want. We will continue to fight for equality for all. (sic)"

David - who has sons Zachary, nine, and Elijah, seven, with his spouse - shared a similar post, acknowledging the "positive change" he's seen in his lifetime but insisting more needs to be done around the world.

He wrote on his own Instagram account: "I can’t believe that 15 years has passed since @eltonjohn and I celebrated our Civil Partnership in Britain. What a wonderful day that was. 6 years ago, we renewed our vows and got legally married in front of our two beautiful sons. This type of civil progress was unimaginable when I was growing up.

"Yet despite all this extraordinary positive change, I remind myself that it’s still illegal to be LGBT+ in 70 countries, and that you can be given the death penalty in 12 of those same countries.

"Through our work with the Elton John AIDS Foundation, Elton and I pledge to continue the fight for equality for our LGBT+ brothers and sisters around the world. @ejaf(sic)"