Micro-blogging service Twitter has revealed it will provide authorities with details of users who have breached super injunctions if "legally required".

"If we're legally required to turn over user information, to the extent that we can, we want to notify the user involved, let them know and let them exercise their rights under their own jurisdiction," said Tony Wang, head of European operations at Twitter.

Wang's revelation comes after Ryan Giggs threatened to take legal action against thousand of web users, including former Britain's Got Talent judge Piers Morgan and DJ Boy Geroge, after they identified him on the micro-blogging site as the Premiership footballer who took out a super injunction to stop details of an extra-marital affair being published.

He was subsequently identified on Monday by Liberal Democrat John Hemming, who used parliamentary privilege to identify him in parliament.

"Platforms have a responsibility, not to defend that user but to protect that user's right to defend him or herself," said Wang, while also admitting Twitter plans to notify any users before their details are handed over so they can defend themselves.

"That's not to say that they will ultimately prevail, that's not to say that law enforcement doesn't get the information they need, but what it does do is take that process into the court of law and let it play out there."