Compulsory face masks in shops and self-isolation for all arrivals as first Omicron cases found in UK
- Full story: Johnson imposes ‘precautionary’ rules for three weeks
- Simon Calder: How PCR tests and self-isolation will work
- Scientists say new restrictions are ‘Plan B Lite’
- Should the government enforce lockdown 4.0? Tell us in our poll
- Analysis: How worried should we be?
- Vaccine firms work to tweak jabs