What ARE the new Tier 4 rules? 

The new Tier 4 restrictions will hit those in London and the South East just days before Boris Johnson's five-day 'Christmas bubble' easing was set to begin. https://www.dailymail.co.uk/news/article-9070921/What-new-Tier-4-rules.html?ns_mchannel=rss&ns_campaign=1490&ito=1490