Sky News’ Sunday morning political programme Sophy Ridge on Sunday will air at 9am when it returns next month, an hour earlier than usual.

The move follows a day after Andrew Marr appeared to slip up on Twitter and reveal his Sunday morning show had moved from 9am to 10am.

In a tweet apparently directed at Ridge, and thought to have been intended as a private message, he said: “Hi Sophy, Andrew here. Just to let you know: they are changing the time of my show to 10am.