The problem with getting a test case is that the initiatve in enforcing the law in a way that sets the case in motion has to come from the authorities. And the main damage done by restrictive legislation like this is that the publicans and the companies that own the pubs will avoid doing anything that would breach their interpretation of the law.

There don't need to be any actual prosecutions for an awful lot of music be be shut down in advance. And that kind of thing won't be likely to show up in any Government review after 12 months.