The Met Office has issued a snow update as an Arctic blast is expected to send temperatures tumbling. Snow showers could soon hit parts of the UK as Britons prepare for winter weather to return. Colder conditions come as high pressure looks set to drag cooler air to the country. In a long-range forecast from October 31 to November 9, the Met Office said: “Following the introduction of some colder air to many areas at the start of this period, with the potential for snow showers in at least northern Scotland, high pressure looks to be the dominant feature during the first part of November. “The…