EU law doesn't work like that. Each country has to pass their own local law to enforce the GDPR. For the UK that was the Data Protection Bill 2017.

From wikipedia:

The GDPR replaces the 1995 Data Protection Directive.[4] Because the GDPR is a regulation, not a directive, it does not require national governments to pass any enabling legislation and is directly binding and applicable.[5]

So, no local laws. It's a regulation.

Only for the sake of correctness/completeness: GDPR does allow member states to adjust certain details to bring them in line with local regulations (see Chapter 9). These are explicit opening clauses though that must not basically weaken or augment GDPR.

It's more complex than that. Different countries might pass different laws about interpretation, and both are valid until there's an ECJ decision.

It's an EU Regulation, which under EU law the local courts have a duty to enforce. Local courts and laws will be dealing with all the details unless a case is appealed to ECJ.

To say that local courts and laws will have no influence is complete rubbish.

I'm not sure why people are downvoting this so hard: https://webcache.googleusercontent.com/search?q=cache:eMV5_l...