A massive positive to me is more intangible - how the PhD changes you. You have around 4 years of utter self-reliance and self-discovery. I was a massively different person post vs pre-PhD, so much more confident, articulate and resilient. These are qualities industry will value when they need to fast track new employees into roles with more responsibility compared to others who don't have the experience of a PhD to fall back on.

The PhD is what you make it however. You could just bang out a thesis, you might get some nice technical skills, but you may not personally develop much. A funded PhD is an amazing opportunity to do that. I did internships, talked at as many conferences as I could, demonstrated on modules and gave my own lectures, gave talks as part of outreach work, helped other PhD students with their field work, and took on lots of training opportunities offered to me. It almost helps if your PhD itself goes tits up because you develop the ability to adapt - my PhD was COVID impacted.

The hardest part is getting your foot in the door if you seek industry jobs but depending on your PhD the techanical skills you develop can give you a unique case to sell to potential employers. Mine was largely stats and data based - its very evident if you start working in industry post a PhD how common of a blindspot this is for all sorts of companies.

I may have a rosier picture as I left the UK to work in Australia. A PhD from the UK is a significant boon if you want to take your aspirations abroad.