The monarch, who turned 94 in April, was honoured on the grounds of Windsor Castle -- where she is self-isolating with 99-year-old husband Prince Philip -- with a small number of Welsh Guardsmen and military musicians.
The 49-year-old jeweller, who has been lodged at Wandsworth Prison in south-west London since his arrest in March last year, appeared via videolink for the remand hearing at Westminster Magistrates' Court in London.
Dr Nishant Joshi and his pregnant wife, Dr Meenal Viz, had initiated the legal action in April with a pre-action letter seeking answers from the UK's Department of Health and Social Care and Public Health England. They decided to push ahead with the case in the high court in London on Wednesday because they feel they are "no longer willing to wait".
Italy, previously Europe's worst-hit, has recorded 33,600 COVID-19 deaths.
The British government has turned down India's request for the extradition of Tiger Hanif, an alleged aide of underworld don Dawood Ibrahim wanted in India in connection with two bomb blasts in Surat in 1993, the UK home office has confirmed.
The trial brings together leading disease control experts from the universities with Medical Detection Dogs, who have already successfully trained dogs to detect the odour of many different diseases in humans, such as cancer, malaria and Parkinson's disease.
The researchers found that after being exposed to high levels of the novel coronavirus, none of the six monkeys that were given the vaccine developed viral pneumonia. Also, there was no sign that the vaccine had made the animals more vulnerable.
The charges against the diamond merchant centre around his firms Diamonds R Us, Solar Exports and Stellar Diamonds making fraudulent use of a credit facility offered by the Punjab National Bank, known as 'letters of undertaking'.
The UK Crown Prosecution Service said Mallya's appeal to certify a point of law was rejected on all three counts, of hearing oral submissions, grant a certificate on the questions as drafted, and grant permission to appeal to the Supreme Court.
District Judge Samuel Goozee expressed his concern at the late submission of the documents, said to include largely bank statements relating to the diamond merchant's companies, but has agreed to consider the application for their submission.
Admitting that a vaccine or drug-based treatment is the only feasible long-term solution, he said the UK has accelerated this with promising vaccine development programmes and a collaboration between Oxford University and pharma major AstraZeneca was a vital step that could help rapidly advance the manufacture of a Covid-19 vaccine when it is ready.
The latest Office for National Statistics data takes the UK's figure past the 29,079 in Italy -- so far with the region's highest death toll from the deadly virus.
The leave to appeal to the Supreme Court is on a point of law of general public importance, which according to experts is a very high threshold that is not often met.
They gave me a face mask so I got litres and litres of oxygen and for a long time I had that and the little nose jobbie, Boris said.
Announcing the news on social media, Symonds, 32, said the baby was named after the UK Prime Minister's grandfather Wilfred and her grandfather Lawrie, with Nicholas a nod to the National Health Service doctors - Dr Nick Price and Dr Nick Hart.
The officials revealed that hospital admissions, particularly in London which was way ahead in terms of the infection than other parts of Britain, is continuing a downward trend and the number of people in critical care is also falling across the board.
The 38-year-old former American actress and wife of Prince Harry had filed the claim for alleged breach of privacy and copyright infringement against Associated Newspapers, the publishers of the 'Mail on Sunday', in the Royal Courts of Justice in London.
The birth is believed to be slightly premature but both mother and baby are said to be doing very well.
The five-day extradition trial of fugitive diamond merchant Nirav Modi will begin from May 11 in a part-remote setting, a UK court has ordered. Modi is fighting his extradition to India over the nearly USD 2 billion Punjab National Bank (PNB) fraud and money laundering case.
British Prime Minister Boris Johnson led the tributes with UK Chancellor Rishi Sunak at 10 Downing Street for the National Health Service (NHS) and other key workers across care homes and public transport at 11 am local time. So far 82 NHS staff are known to have died after testing positive for the coronavirus, including many with their roots in India.