Prince Charles is meeting ministers so he can pursue his own political interests, according to anti-monarchy group Republic.
The Prince of Wales has held private meetings with Cabinet ministers 36 times since the last general election.
Republic chief executive, Graham Smith, said the Prince of Wales was clearly choosing ministers to meet who are relevant to his own personal interests.
Mr Smith said the public needed to have a clear understanding over what the Prince's interests are, and whether those interests are impacting on public policy.
More top news
Georgia Williams could have been saved if police had not missed several chances to catch her killer, a review found.
Jennifer Connell complained the injury made it difficult for her to "hold a plate of hors d'ouerves" at a party recently.
Despite still making music, the music legend considers himself 'retired' from taking to the stage, his agent claims.