The UK has become the first country in the world to approve the Pfizer/BioNTech coronavirus vaccine for widespread use, writes BBC.
British regulator, the MHRA, says the jab, which offers up to 95% protection against Covid-19 illness, is safe for roll out next week.
Immunisations could start within days for people who need it the most.
The UK has already ordered 40m doses - enough to vaccinate 20m people, with two shots each.
Around 10m doses should be available soon, with the first 800,000 arriving in the UK in the coming days.