HI Kev
This week the EU are due to confirm their Vaccine Passport that will allow all EU citizens to travel free of any tests and quarantine throughout the EU.
The UK, with some other countries, are expected to be added to that list .
but
Individual EU countries are free to make their own rules. Greece and Spain have agreed to let in UK citizens with proof of 2 vaccinations 14 days before arrival.
So if you have not done so, you will need to download the NHS England App ( not test and trace) where you will see a QR code showing proof of vaccination.
Dont forget the PLF
Hope that helps
Keep safe
Geoff