My guess is that it will just be ignored and everything will go on as usual - Splash
That will be a very costly mistake.
The EU Court will now require the Data Commissioner of every member state to ensure that the WT organisation in their country is compliant. They will have to register with the commission and I suppose they will need to submit evidence of their new data protection policy and procedures.
Normally this requires people whose data is being collected to be formally informed of what, who and why and to be able to request a copy.
Data is a hot topic in the EU.
The next move needs to be to require all elders to submit to DBS (criminal records) checks. I would actually like to talk to my MP about this.