www.makemkv.com

So when I try to rip this particular disc with makemkv the drive spins up the disc, makemkv begins it's loading cycle for a minute or so, then it reads "No disc inserted".

It's the second disc (weirdly the first one worked fine) of the:
Doctor Who: The Complete Thirteenth Series (Blu-ray , the Australian copy)

I've tried different drives, different computers, and even returned the disc and bought another just to have the exact same issues.
I'm assuming this is a decryption error, I can't think of anything else it could be. Some help would be greatly appreciated.

Cheers

Does your computer see the disc in the drive in either Finder (macOS) or Windows Explorer?

No it just lists the drive as it does empty

So that's an issue between the drive and the disc. Perhaps the disc is dirty? Sometimes there can be an almost invisible film on a disc that impairs a drive's ability to read the disc.

In any case, if the computer can't register that there's a disc in the drive, there's not much MakeMKV can do.

yeah i assumed it was a problem with the disc, but i went out and bought another one of the same blu-ray set and i'm having the same issues

What disc is it you are having problems with I have a collection of DW I will try with mine?