Can I study with Tier 1 dependent?

I live in the UK with a Tier 1 (dependent) visa. I would like to enrol in a full-time PhD programme.

Can I study with my current visa or should I switch to Tier 1?

If I can study with Tier 1, do I need to inform Home Office? Do I need any sort of permission/certificate to study with Tier 1 (dependent)?

Which category of Tier 1? What visa does your partner hold? There is more than one Tier 1 category.

Can I study with my current visa

Yes

If I can study with Tier 1, do I need to inform Home Office?

No

Do I need any sort of permission/certificate to study with Tier 1 (dependent)?

Not that I am aware of.