English libel law is substantially more friendly to the plaintiff than to the defendant.
I referenced US libel law as a counterpoint to the rest of the world because I thought you were not thinking of the US. There have been several high profile cases of journalists and scientists saying true but defamatory things in the UK about quacks and charlatans and being hounded in the courts. In response to this, the UK has actually passed legislation attempting to remedy the situation, but this has not yet taken effect.