- Facing a new coronavirus strain, the UK imposes strict Tier 4 lockdownVox.com
- Boris Johnson backtracks on relaxing Christmas rules after scientists warn new Covid-19 strain is spreading fasterCNN
- U.K. Imposes Harsher Lockdown on London, Citing New Version of VirusThe New York Times
- The Observer view on Boris Johnson’s Christmas U-turnThe Guardian
- UK nixes Christmas gatherings, shuts London shops over virusYahoo News
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