depends. If it was the odd extra person, I wouldn't know, if it was like the family who used to live near me (garden backed onto mine) who had huge noisy parties every weekend, then absolutely like a shot and the rest of their neighbours would be queuing up to do it too. To be honest, while there has to be a limit set somewhere, I don't think the police will be bothered, nor Public Health England, if there are seven people at an indoor family gathering instead of six. I do think that they will want to discourage and deal with large gatherings.