LONDON, BORIS JOHNSON : A group of English pub and night club owners plans to mount a legal challenge if the British government announces that hospitality and entertainment venues in northern England need to shut down to tackle the spread of COVID-19.Prime Minister Boris Johnson will set out new measures to contain the pandemic later on Monday, which media report could include shutting bars in some northern English cities like Manchester where cases are at a high level.If that happens the group, led by Manchester club night and events operator Sacha Lord, will instruct its lawyers to begin a legal process to oppose the action, calling on the government to show what scientific evidence backs up the measures."We are waiting today for Boris.