Excellent, thank you so much LL.
I realised that occasionally there are other things in brackets I want to keep ie (dub) (version) etc, so the more precise version is better. I tried it in Convert -> Tag-Tag and it worked perfectly! The only small issue I’m having that might be Mac-related, is trying to implement that as an action using "Replace with regular expression".
As I said it’s not working yet but this is how it looks so far as an action:
So close! Any ideas on next steps?