英国前首相约翰逊：我坚信新冠病毒是由实验室泄漏引起的。中国人欠我们合理的解释，我们的政府应该开始要求他们作出回应。

https://www.dailymail.co.uk/debate/article-14524489/BORIS-JOHNSON-believe-Covid-caused-lab-leak-Chinese-owe-proper-answers.html?s=35
Mail Online
BORIS JOHNSON: I now believe Covid WAS caused by a lab leak
You what? I said to my team in Number Ten, as they explained the origins of Covid. What did you say they were doing?