Up to mid-March 2020, the Government’s Sage (Scientific Advisory Group for Emergencies) Committee advised against attempting heavy suppression of the spread of what in those days it called the “Wuhan coronavirus”. The minutes of its meeting of March 13 2020 state: “Sage was unanimous that measures seeking to completely suppress spread of Covid-19 will cause a second peak. Sage advises that it is a near certainty that countries such as China, where heavy suppression is underway, will experience a second peak once measures are relaxed.”
https://www.telegraph.co.uk/news/2020/10/14/second-wave-proves-lockdowns-wont-stop-covid/