LONDON, UNITED KINGDOM - NOVEMBER 28: A view of Heathrow Airport in London, United Kingdom on November 28, 2021. United Kingdom imposed new restrictions following the discovery of a new Covid-19 variant. Face coverings will become mandatory again in shops and on public transport and PCR tests for everyone entering the UK will be introduced. From 04:00 today, people arriving from South Africa, Botswana, Lesostho, Eswatini, Zimbabwe and Namibi, Malawi, Mozambique, Zambia, and Angola will face mandatory hotel quarantine. Hasan Esen / Anadolu Agency/ABACAPRESS.COM