I recently bought a second PC Blu-ray writer just in case this would happen. Lucky me. I should be good for the next 10 years.
Looks like they're still available for now in the UK but at inflated prices sent from America
https://www.amazon.co.uk/gp/aw/d/B079LTC6ML
The above supports UHD and is easy to... adapt for legitimate ripping of your Blu-ray. For backup purposes of course.
I think Panasonic still make some too but I've used LG ones for years.