Britain experiences coldest night in 7 years with more snow to come

People walk in snow with St. Paul's Cathedral in the background in London, Britain, Feb. 1, 2019. The Met Office on Friday issued a yellow warning for snow and ice after some parts of Britain experienced the coldest night in seven years on Thursday. A severe cold snap is gripping Britain with snow and ice covering vast expanses of the nation. (Xinhua/Han Yan)