Britons travelling to Europe should ensure their passports are valid for a specific period, I think its for a minimum of 6 months before its expiry date and they have comprehensive travel insurance, and they check their mobile phone roaming policy people travelling to Europe from the UK with pets should contact a vet at least four months before their trip.
The EU health card, I knew it as E111? wouldn't apply anymore, so we we will all need to make different arrangements about that, just more cost and cover on the insurance I suppose?