UK will start a trial for 'vaccine passports.' But pubs and essential services won't be included, Boris Johnson said.

• The United Kingdom is going to start a trial for a COVID-19 "vaccine passport" program.
• The program would allow people who are vaccinated to access events like concerts and sports games.
• Prime Minister Boris Johnson said vaccine passports will "never" be required for essential businesses, according to The Independent.

The United Kingdom will start a trial for COVID-19 "vaccine passports," Prime Minister Boris Johnson said at a press briefing on Monday.

Johnson said "COVID safe certifications" - either a vaccine, negative test, or proof of antibodies - will be tested at a number of events this month.

However, Johnson said vaccine passports will "never" be required for essential businesses or public services like buses or trains, according to The Independent. Bars and restaurant patios will be among the businesses allowed to open on April 19 during the next phase of the UK's coronavirus plan, Johnson said.

Read more: Here's how young and healthy people are getting vaccinated early. It's totally legal, and they're doing good in the process.