LONDON • The doorbell rings to the tune of the British national anthem, God Save The Queen, and Prince Harry opens the door to find Ed Sheeran on the threshold. Both men have red hair and beards.

"It's like looking in the mirror," the prince quips before ushering the pop star inside.

This is the opening scene of a video released on Thursday in which Queen Elizabeth's grandson and the Grammy-winning musician join forces to campaign for an issue both care about deeply.

The clip, posted on Prince Harry's Instagram page, shows the pair sitting at a table talking about their joint passion, but after a short while, it becomes clear there is a misunderstanding.

"This for me is a subject and a conversation that is just not talked about enough. I think people all over the world are really suffering," Prince Harry says.

Sheeran responds that he has been trying to write a song about the issue to help raise awareness.

He then adds: "People just don't understand what it's like for people like us."

Looking confused, Prince Harry asks: "What?"

So Sheeran elaborates: "You know, the jokes and snide comments, I just feel like it's time that we stood up and said, you know, we're not going to take this any more. We are ginger and we're going to fight."

Apparently embarrassed, Prince Harry says: "Okay. Slightly awkward", before going on to explain that he was not talking about discrimination against people with red hair, but rather about World Mental Health Day, which falls on Thursday.

Hastily deleting the words "GINGERS UNITE" from a document on his laptop, Sheeran quickly gets on-message and the video closes with the pair urging people to reRead More – Source