More than half a million doses of vaccine were allocated to the UK in March from Covax, the organisation ensuring fair global access to the Covid vaccine, APA reports citing BBC.
It compares the number of doses given to Botswana - which had not started its drive at the time and was given 20,000 doses.
Other poorer nations also had fewer doses given to it than the UK, which has been leading the world in its vaccination rates.
Since January, Covax has largely allocated doses according to population size - but regardless of the vaccination coverage already in place.
It is now planning to change how it allocates doses.
The UK has invested £71m in Covax, in theory paying for up to 27 million doses of the vaccine, and has also started donating up to nine million further doses, some through Covax.