Please wear a face covering or face mask information sign in the window of a shop during the Coronavirus pandemic Covid-19 lockdown in London, England, Europe

4k city city of london coronavirus covid19 england face covering face mask lockdown london air pollution british central london cities city center city centre corona virus deserted empty europe european food and drink industry global pandemic hospitality industry hygiene infectious disease information nobody ppe protection protective clothing quiet retail retail industry safety scenery shop window shoping shopping shops sign social distancing surgical mask uk united kingdom urban scene virus wearing