The Oxford jab is also 100% effective at keeping people out of hospital with severe illness.
PM gets first dose of the jab at St Thomas’ Hospital in central London.
The prime minister has urged the public to continue taking up the offer of a vaccine.
Watchdog's intervention comes after major EU countries halted roll-out amid blood clotting fears.
The MHRA says the benefits outweigh any risks and has urged the public to get their vaccine when invited to do so.
People in their 40s may have to wait until May for their first dose, but Matt Hancock has offered reassurance over target dates.
It means the Pfizer and AstraZeneca jabs may not need to be modified to protect against the strain.
The prime minister revealed he has been invited to get a jab.
European countries have paused the safe Oxford/AstraZeneca jab. Here’s what it might mean for Brits.
Downing Street reassurance comes as European Medicines Agency agrees the jab is safe.