Campaign group Republic has promised there will be large protests at next year's coronation of Charles.

Dismissing claims the monarchy or the coronation will be slimmed down or modernised, Republic's CEO Graham Smith said today:

"Charles is already king. There is absolutely no need to go through with this expensive pantomime."

"Sweden and Norway scrapped coronations more than a century ago, if Charles wants to modernise he would start by doing the same."

"But we know the claim of modernising or slimming down the monarchy is hot air. The cost will keep going up and the institution will remain stuck in the past."

"When next year's coronation goes ahead it will be met by large republican protests. The movement has gained support over the last ten days, it will continue to grow over the next twelve months."