The prime minister has had his first dose of the AstraZeneca vaccine as a host of European countries announced they would return to using the jab following fresh safety assurances.
After receiving his first Covid-19 jab at St Thomas' Hospital in London, Boris Johnson said: "I had a wonderful nurse called Lily and she said 'you’re going to feel a shock'. I literally did not feel a thing.
"So it was very good, very quick. Everybody when you do get your notification to go for a jab, please go and get it. It’s the best thing for you, best thing for your family and for everybody else," he added.
When asked what he would say to people who are nervous about getting vaccinated, Mr Johnson said: "Don’t just listen to me, listen to all the scientists, listen to what the European Medicines Agency had to say yesterday, to what the MHRA has said.
"The risk [of not getting the jab] is Covid, this is a great thing to do."
Mr Johnson's first Covid-19 vaccination comes as a slew of countries, including Germany and France, reversed their decision to temporarily pause its use over blood clot concerns after the European Medicines Agency (EMA) called the vaccine "safe and effective".
Ireland, France, Italy and Germany, along with Cyprus, Latvia and Lithuania, have confirmed they will resume rollout of the Oxford shot on Friday.
Meanwhile Spain, Portugal and the Netherlands have said they will follow suit next week, although Spain said it could exclude certain groups.