Libel laws are extremely strong in the UK; the closes thing we have here would be anti-trust laws. As a fun historical example, Richard Branson felt BA was act

Libel laws are extremely strong in the UK; the closes thing we have here would be anti-trust laws. As a fun historical example, Richard Branson felt BA was acting monopolistically in England; they both kept Virgin out of Heathrow for some time, and one of their senior execs badmouthed the airline in England. Virgin took the court to New York State (since, you know, JFK Airport), won the anti-trust case there, then returned and won the libel case in the UK based on evidence in the US case. At least, that's how Branson tells it.