Shazam has broken through 250 million users worldwide as it rolls out an expansion of its second-screen TV service in the US.

The newly-expanded TV companion app will now allow those in the US to access cast details and photos, music in shows, celebrity gossip, trivia, celebrity tweets and other information about any TV programme in the market as well as instantly share comments on Facebook and Twitter.

Shazam CEO Andrew Fisher said: “With more than a quarter of a ...