Indoor gyms, swimming pools and other leisure centers in England started to reopen on Saturday for the first time since March. /CFP

Swimmers at London Aquatics Center are required to stay two meters away from each other. /CFP

The facilities that reopen have to follow strict measures on hygiene, social distancing and protection for staff, including limiting the number of people using the facility, and spacing out equipment, according to guidelines issued by the UK government. /Xinhua

According to Johns Hopkins University, confirmed COVID-19 cases in the UK surpassed 300,000, with an official death toll of more than 45,000, on Sunday. /CFP