Hi Dougie75 welcome to our community and thanks for posting.
I am sorry to hear you're having issues watching Sky Sports via TV Go. Can you please confirm that you're attempting to watch via the SKY Sports App? There is a section on there for Virgin Media customers. Can you also please advise if the app is registered on more than one advice? You can confirm this here
Hi, thanks for replying. I believe I have resolved the issue. It was some malware that had infected my MacBook. I downloaded some antivirus software and it seems to have cleared it and my Sky Sports App (via Virgin media) is working again.