Hi Grumpy Old Man
I've had a look at the article you've linked but can't find any reference to Skypebridge.exe, only Skype, so I'm not sure how that would help me.
I've scanned with Malwarebytes already, as mentioned in original post, and did get a lot of PUPs. I'm now scanning again, and will do until it's clear.
I'm not too familiar with using CCleaner, I have to admit. I'll download it and give it a try, though, if I can sort this without.