Olly - read my lips. UK court orders are only enforceable in the US by fresh legal action and US law specifically bars the enforcement of some types of UK awards.

If you think that Facebook has assets in the UK against which enforcement of a money judgment would be possible, please give reasons.

Please identify how a UK order of specific performance (eg to do something for example reveal information) can be enforced against a company and persons in the USA. That can ONLY be done under US law.