Health Secretary Steve Barclay, has ordered that some 26 million UK residents should be jabbed with the new 'variant-busting' Covid booster by December - to ease seasonal pressure on the National Health Service.
However, there are no plans as of yet to administer a fourth dose to those under the age of 50, NHS England has confirmed.
The vaccine to protect the most vulnerable against Omicron will begin its roll out in a week - the same day that Liz Truss is expected to be confirmed at the new UK prime minister.