coronavirus area.Public health officials in the West Midlands and Greater Manchester are urging anyone visiting from a Tier 4 area such as London, Wales or the southeast of England to self-isolate, even though travelling from the highest tier is against lockdown restrictions.Videos shared on social media showed hordes of people cram into train stations and block the motorways trying to escape before the restrictions kicked in as London and most of the home counties were placed into a new, stricter tier.It prompted fears the more infectious Covid-19 strain that caused the relaxation of restrictions over Christmas to be scrapped would spread across the country.Director of public health for the Lancashire authority of Blackburn with Darwen,.