Luckily being EU citizens already, don’t have to prove or do anything unlike in UK - that’s what freedom of movements means literally 
On second thought, it seem to be rather British & unfair idea of ViP Club.
Anyone know an informative link…? Hope I’m not interrupting…
My g’pa, and by marriage …his wife too…both long gone…left me …what I hope is a useful legacy.
That is… (my now fully ok’d a by German authorities.)… German Nationality. I’m recognised, Brit/German. So… ?
So what does that mean, for me, in brexit terms? I know nothing and hope someone can suggest a link.
As they were both registered “enemy aliens” and went thru very grim events…at the time, I feel very humble and grateful that they hung in there, and did their best to be good citizens…despite lack of ww2-time, popularity, so I would like to make Best Use of their unplanned gift… Is it brexit- good, to be German?