British Prime Minister Boris Johnson on Saturday announced a new month-long lockdown for England after being warned that without tough action a resurgent coronavirus outbreak will overwhelm hospitals in weeks.

On the day the U.K. passed 1 million confirmed COVID-19 cases, Johnson made a sudden about-face and confirmed that stringent restrictions on business and daily life would begin Thursday and last until Dec. 2.

He said at a televised news conference that "no responsible prime minister" could ignore the grim figures.

"Unless we act, we could see deaths in this country running at several thousand a day," said Johnson, who was hospitalized earlier this year for a serious case of COVID-19.

Under the new restrictions, bars and restaurants can only offer take-out, non-essential shops must close and people will only be able to leave home for a short list of reasons including exercise. Activities ranging from haircuts to foreign holidays must once again be put on hold.

Unlike during the U.K.’s first three-month lockdown earlier this year, schools, universities, construction sites and manufacturing businesses will stay open.