Twitter is no longer “high risk” for brands after Elon Musk hired a seasoned marketing executive as the company’s new boss, a leading advertising agency said.

GroupM, which is part of the London-listed ad group WPP, previously warned clients about advertising on the social media site in the wake of Mr Musk’s $44bn (£35bn) takeover last year.

But the agency has rowed back following the appointment of Linda Yaccarino, former head of advertising at US media giant NBCUniversal, as the platform’s chief executive.

Ms Yaccarino’s appointment has been widely welcomed by advertisers after months of turmoil sparked by the Tesla billionaire’s troubled reign at Twitter.