Just technically illegal, but on a small scale - intellectual copyright theft in the UK. Almost always civil means are used.   The federation against copyright theft, and BPI take down websites on a larger scale - like they used to do with pirate factories, but mostly copyright owners are left to get on with it using civil means, as there are always plagiarism claims and duplicate claims. The costs are prohibitive. So criminally usually used to take down 'factories' and illegal download websites that kind of larger stuff. But it is not a lie to say recording material from a concert and making it available, without all permissions in place, is usually technically illegal.   Then I bet even the odd police man whips their mobile phone out records a concert and shoves excerpts on social media. When do we cross a line between low key sharing odd videos and recordings for fun, and something that is obviously dodgy and deliberately going to a different level?   It is a difficult call to make.