I moved UK->DK a year ago, ahead of the rush. I said I would, if UKIP got too many votes in the European election.
Since then, two friends have moved from London to Berlin, two others are planning to move to Frankfurt, two others have job offers in Stockholm or Malmø. (This is three couples.) Another friend has applied for a position in Lund.
Only 3/7 of these people are British, so the other 4 have already made a similar move.
Obviously it's more said than done, but it happens and I admire those who follow through.