The Ministry keeps in touch with the British Prime Minister via a wizard's portrait in the Prime Minister's office at 10 Downing Street. The portrait, which cannot be removed from the wall (because of a Permanent Sticking Charm in place), notifies the Prime Minister of the Minister for Magic's arrival and, after they have been notified, the Minister for Magic appears in their office via the fireplace which has specifically been hooked up to the floo network. The Ministers for Magic who appear in the "Harry Potter" series, such as Cornelius Fudge and Rufus Scrimgeour, tend to act in a somewhat patronising manner towards the Muggle Prime Minister.