Particularly for the benefit of those who are subscribed to this thread, following the meeting of the EU27 on 10/11th April 2019 where a further extension to the UK's departure from the EU was agreed, the advice in the wiki has been revised and updated.
Members may wish to take particular note of an evolving view around the need for visas for UK Citizens travelling to the EU27 as 'No Deal' becomes significantly less likely.
NWIFlyer
Senior Moderator