Heavy showers, hail and thunder are forecast to hit the UK days after the warmest spring equinox in more than 50 years. There was torrential rain in some parts on Saturday afternoon and National Highways said parts of the M18 in Yorkshire were closed while specialists worked to clear flood water. It is expected to be a cloudy start to Sunday with rain in the north and east and sunny spells in the north-west and south-east followed by showers, the Met Office said. There will be above average temperatures for most parts of the UK topping 15C in London, 12C