Shares in Twitter have surged more than 17% after the firm reported rising numbers of users and higher revenues, days after its chief executive promised to improve how it tackles online abuse.

The company’s revenue rose to $787m (£605m) in the first quarter, up 18% from a year earlier.

The number of daily active users rose 11% to 134 million.

The results prompted criticism from US President Donald Trump, who accused the platform of political “discrimination”.

The firm’s founder, Jack Dorsey, has said he regrets that Twitter’s design encourages “outrage”.

He told a TED conference in Vancouver last week that he was ready to make changes to the way the site operates to try to make it more conversational and to discourage abuse and misinformation.