The prime minister has joined a nationwide applause to pay tribute to NHS staff on the 72nd anniversary of the health service.
The round of clapping was inspired by the weekly Clap for Carers initiative to thank key workers during the height of the coronavirus pandemic.
Prince Charles paid tribute to staff working through “the most testing time in the service’s history”.
It is hoped the anniversary applause will become an annual tradition.
On Saturday, UK landmarks were lit up blue in celebration and remembrance.
Downing Street, the Royal Albert Hall, Blackpool Tower, the Shard and the Wembley Arch were all illuminated and a minute’s silence was held to remember those who have died during the pandemic.
The latest government figures, released on Sunday, showed a further 22 people had died in the UK after testing positive for coronavirus, bringing the death toll to 44,220.
People were also asked to place lights in their windows in a show of remembrance on Saturday night, with the Archbishop of Canterbury, the Most Reverend Justin Welby, lighting a candle in Canterbury Cathedral.
A World War Two Spitfire plane with the words “Thank U NHS” painted on its underside tipped its wings above hospitals and the homes of fundraisers and volunteers, recognising the way people have supported the NHS and local communities during the pandemic.
The National Health Service was launched on 5 July 1948, with the core principle that it is free at the point of delivery and is based on clinical need.
First Minister of Scotland, Nicola Sturgeon, was among officials joining in with the nationwide applause.
In a video message earlier she said the country was “depending more than ever” on its health and care workers, and thanked them “from the bottom of my heart”.
First Minister of Wales, Mark Drakeford, said NHS staff and social care workers were “all heroes”.
And Captain Tom Moore – who raised more than £32m for the health service by walking laps of his garden during lockdown – shared a video of himself clapping from his armchair at home in Bedfordshire.
The idea for Sunday’s round of applause was inspired by the success of the weekly Clap for Carers which saw households across the country show their appreciation for the NHS and other key workers during the lockdown.
Annemarie Plas, who founded the Clap for Carers initiative, joined Prime Minister Boris Johnson outside No 10 for the clap at 17:00 BST.
Speaking on BBC Breakfast earlier, she said: “We have had this first part of the crisis, we don’t know what lies ahead, so if we can have this one moment where we say thank you to each other and recharge our batteries for what may be a heavier time that lies ahead, then I think that is a beautiful moment.”
She said the NHS helped her when she arrived in the UK from the Netherlands as a new mother, “so I feel very happy to be in touch with the NHS this way”.
On Friday, Mr Johnson urged the public to applaud for “those who have worked tirelessly and selflessly to help the nation get through this pandemic”.
The moment was broadcast on BBC One.
In a video message to mark the occasion, Prince Charles spoke of his gratitude and pride for the “costly sacrifices” of NHS staff.
“Despite all that has been endured, there is deep cause for gratitude, and a true reason for pride,” he said.
The prince also said the pandemic had brought out the best in people, adding: “This renewal of our community spirit has been a silver lining during this dark time.”
Speaking at a rally celebrating seven decades of the health service, Labour leader Sir Keir Starmer said NHS staff needed a pay rise in the wake of the pandemic.
“It’s very important that we don’t just say thanks, but recognise in a meaningful way what the NHS has done,” he said.
His comments come after unions representing more than 1.3 million nurses, cleaners, physiotherapists, healthcare assistants, dieticians, radiographers, porters, midwives, paramedics and other NHS employees wrote to the chancellor and the prime minister calling for pay talks to start soon.
Meanwhile, about 100 protesters gathered at Marble Arch in London, calling for the end of racial disparity in the health system.
One of the organisers, Tyrek Morris, 21, told the crowd: “We are protesting for black lives and one of the demands we have is to abolish the racial disparity within the NHS, especially towards black women.
“We need to implement extensive measures to prevent the disproportionate suffering of black women in healthcare and bring to an end the significantly increased black maternal mortality rate.”
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