Asked by reporters outside Buckingham Palace whether he would play wedding singer for the Royal couple if asked, he replied with a grin: "Yeah, why not".
While there, Ed hinted he might be performing at one of the biggest events next year will see - Prince Harry and Meghan Markle's wedding.
Sheeran was not named a knight or Sir, so instead of the formalities associated with such a distinction, Sheeran chatted casually with Prince Charles.
The singer-songwriter said he had not been asked by the prince and his fiancée to perform but revealed he would be willing to if he was asked.
He has also been named as the biggest star on YouTube in the United Kingdom in 2017, topping the site's most popular video lists for the year.
Brussels to sue Hungary, Poland and Czech Republic over asylum seekers
Hungary has been given a deadline of two months to respond to the latest step in the Commission's action over the law. The move was an attempt to relieve pressure on Greece and Italy where the vast majority of migrants were arriving.
He said: "Do you know what I love, my grandfather was a massive royalist".
Sheeran's "New York concert" tomorrow (Dec. 8) is the Z100 Jingle Ball at Madison Square Garden.
Sweetly, the 26-year-old dedicated the award to his late grandfather Bill Sheeran who died on this day four years ago saying he'd be "proud" of him.
"I think it's persistence", Sheeran, who was recently forced to cancel tour dates due to arm injuries sustained in a bicycle accident, insisted.
Despite breaking numerous records - including becoming the most-streamed artist on Spotify, and topping the Apple Music and iTunes charts with the most popular album, Divide, and song [Shape of You] of 2017 - and winning countless awards during his career spanning more than a decade, Sheeran said that "persistence" has got him where he is.