@nicol I love that GDPR work in CiviCRM. I've often encouraged orgs I'm involved with to support it. Supporting FLOSS developers across borders is important and necessary even though the paperwork is significant for EU orgs.
Using services is another matter, because individual rights are involved. (Suitable CiviCRM hosting exists in the EU, AFAIK.)
It's painful to see the UK and the EU grow apart, but it's the reality we live in. EU students in the UK decreased by 60%! https://commonslibrary.parliament.uk/research-briefings/cbp-7976/