[TheRealPomax]

Perhaps a dumb question, but why would the EU courts be able to overturn laws in the UK now that the UK is not part of the EU anymore?

[AAAAaccountAAAA]

ECHR is not an EU court, but a separate entity, having for long had many non-EU member states.

[shortsunblack]

ECtHR is not an EU court. UK is part of Council of Europe, which also includes Russia. Being member of Council of Europe entails mandatory treaty law of ECHR.