Matt Hancock told Sky News the planned change “hasn’t been clinically advised yet” but it is “absolutely something we’re working on”.

Under current rules, people who return from a country on the amber list – such as France, Germany, Greece, Portugal and the US – must self-isolate for 10 days whether they have been vaccinated or not.

Hancock told Sky News that the government was “working on plans to essentially allow the vaccine to bring back some of the freedoms that have had to be restricted to keep people safe”.

The government is due to make an announcement about international travel on Thursday, although reports suggest this could be postponed until Monday 28 June.

Rory Boland, travel editor at Which?, said: “Steps to make international travel easier when the public health situation allows will be welcomed by travellers, but it’s vital that if daily testing is to be introduced as an alternative to isolating, that the current serious problems with the government’s testing for travel system are addressed before further requirements are introduced.

“The government must urgently take steps to ensure its testing system is robust, accurate, and that all results are delivered on time, every time – not only to ensure travellers aren’t left out of pocket by a flawed testing system, but to protect the health of the country.”