March 23 2021 marks the first anniversary of Prime Minister Boris Johnson announcing the start of the UK’s Covid-19 lockdown.

Here are some of the key dates and statistics for the 12 months since lockdown began.

All death figures are based on the most up-to-date statistics for people who had Covid-19 recorded on their death certificate, published by the Office for National Statistics.

– March 23 2020: Boris Johnson announces a UK-wide lockdown. The UK’s cumulative Covid-19 death toll, which passed 100 on March 15, now stands at just over 1,000.

– April 2: First of 23 consecutive days when more than 1,000 daily deaths are recorded in the UK.

– April 5: Cumulative death toll passes 10,000.

– April 8: The “deadliest” day of the first wave, with 1,459 deaths occurring in the UK.

– April 17: Cumulative death toll passes 25,000.

– May 22: Cumulative death toll passes 50,000.

– June/July: Most lockdown restrictions are eased or lifted across much of the UK, though new rules – such as face masks in certain settings – are introduced and social distancing continues. Local lockdowns are imposed in some areas where cases start to rise.

– June 18: The daily death toll drops below 100 for the first time since March 19. It returns above 100 on June 24 and June 25, then remains below 100 until October.

– August 29: The daily death toll drops briefly into single figures – eight deaths – for the first time since March 11.

– September/October: More local lockdowns are introduced and restrictions tightened, culminating in new levels or ‘tiers’ of restrictions across parts of UK.

– October 7: 109 deaths involving Covid-19 – the first time the daily toll has been above 100 since June 25.

– November 18: 509 deaths involving Covid-19 – the first time the daily toll has been above 500 since May 9.

– November 25: Cumulative death toll passes 75,000.

– January 5 2021: The whole of the UK is back in lockdown, after weeks of tougher restrictions taking effect across the four nations.

– January 7: Cumulative death toll passes 100,000.

– January 19: The “deadliest day” of the entire pandemic, with 1,463 deaths occurring in the UK.

– January 26: Cumulative death toll passes 125,000.

– January 30: Anniversary of first known death involving Covid-19 in the UK.

– March 2: Cumulative death toll passes 147,000.

– March 23: One year since the start of the first lockdown.