A leading Covid scientist has warned that the UK's vaccine programme will not alone be enough to kickstart holidays abroad.
The UK passed the milestone of jabbing 30 million adults on Sunday, with 57% of the adult population now vaccinated.
But Dr Mike Tildesley, a member of the Scientific Pandemic Influenza Modelling group (SPI-M), the modelling subgroup of Sage, said that the UK will also need to send vaccine supplies abroad if it wants a return to international travel.
He told BBC News on Sunday that while the vaccine programme could allow the UK to return to a "level of freedom", other countries will take a long time to roll out jabs.
He added: "Domestically it's pretty easy for us to get back to a level of freedom given how well our vaccination campaign is going.
"But this is a global problem, it could be a long time before some countries get the vaccines they need to be able to fully unlock and start international travel again.
"So we do need to look more widely, if we want to have a free UK as we did 18 months ago, but also allow international travel, we do need to think about sending vaccines to those countries where they are not able to acquire the levels of vaccines we have been able to."
Dr Tildesley also said that a third wave of infections from Europe could lead to more Covid cases.
But the successful vaccination programme could mean this will not lead to more people going into hospital or dying.
He added: "This time we have got a very successful vaccination campaign, we have high levels of protection among the vulnerable, we may see cases rise a little bit.
Overall, the SAGE experts said the country was in a "good position" to ease restrictions.
He added: "I am relatively confident that if things keep going as well as they have been going we should be on target to hopefully relax all of those measures by June."
Today marks the return of team sports and the Rule of Six outdoors as families and friends are reunited.
Government officials are said to fear people in England taking the relaxation too far, however, and planning indoor get-togethers over a chilly Easter weekend.
