People vaccinated in England who have had a full course of the COVID-19 vaccine can demonstrate their COVID-19 vaccination status for international travel via the NHS App.
NHS COVID Pass for events and travel –
An NHS COVID Pass shows your coronavirus (COVID-19) vaccination details or test results. This is your COVID-19 status. You may be asked to show your pass to get into some events, where the COVID Pass is being trialed, or to travel abroad. Always check the entry requirements for the venue or the country you’re visiting.
For further information please visit the NHS website.