[jeroenhd]

I think the UK will be fine for a while because they still enforce their implementation of the GDPR. Once those laws change, though, I'd definitely avoid storing or processing any data over there.

I don't think the UK has that much to offer in terms of cloud and storage. All the big brands are in continental Europe or Ireland. The real impact would more likely be that externalised services that some European businesses contract dedicated companies in the UK for (payroll, data analysis, marketing, insurance, etc.) could suddenly become a subject to strict privacy rules that would make it impossible to continue if the UK were to be dropped of the whitelist.