The Met Office has issued an urgent thunderstorm warning across a 128-mile stretch of the UK. Heavy showers combined with thunderstorms are likely to lead to some travel disruption and flash flooding, the forecaster said.The warning is in force from 7pm tonight until 10am tomorrow across swathes of the UK, including the East and West Midlands, North West, North East, Yorkshire and Wales.The latest alert means that Britons across the nation shoul…