What happened after Brexit
1. UK Government passed legislation (Personal Data Protection, Privacy & Electronic Communications (Amendment etc) (EU Exit) Regulations 2019) to "retain" the vast majority of the GDPR to create the "UKGDPR" from the end of the Transition period
2. All basic obligations, rights and principles remain pretty much the same
3. The European Union has formally recognised the UK's high data protection standards (June 2021)
4. The UK GDPR works in tandem with the UK's Data Protection Act 2018, which contained UK-specific tailored provisions on implementation