More areas of England moved up into tiers 4 and 3; UK has highest recorded daily rise in cases; new variant discovered in travellers from South AfricaMillions more under tier 4 restrictions in England from Boxing DayTrump demands changes to sign $900bn stimulus billAustralian officials scramble after Qantas crew member tests positiveCovid fatalities soar in Mexico as president condemned for inaction 10.39pm GMT After a swathe of England is set to be placed under lockdown-like tier 4 conditions on Boxing day, scientists warn that ministers are acting too slowly to curb the rising infections, Simon Murphy and Josh Halliday report. The new tier reshuffle will see 42% of England, nearly 24m people in tier 4 and 44% in tier 3. Currently, the Isles of Scilly are the only area that is remaining in tier 1. Related: English regions should go into Covid tier 4 now, scientists say 10.27pm GMT The UK government has implemented a travel ban on passengers arriving from South Africa after two cases of another new strain of Covid-19 was found in the UK, PA reports. Starting from 9 am on Christmas Eve, visitors arriving in England who have been in or transited through South Africa in the past 10 days will not be permitted entry, and direct flights will be banned, the Department for Transport said.