Facebook, Twitter and Google and are deliberately failing to stop terrorists from using their websites to promote terrorism because they believe it will "damage their brands", MPs have warned.

MPs warned that social media websites are becoming the "vehicle of choice" for spreading terrorist propaganda but websites are policing billions of accounts and messages with just a "few hundred" employees.

The Home Affairs select committee accused US technology giants including Google, Facebook and Twitter of "passing the buck" and said that they have become a "recruiting platform for terrorism".