Britain's Queen Elizabeth II speaks with staff including Professor Tim Atkins (R), who was honoured for his work on the 2018 Novichok incident and has been involved in the fight against Covid-19, during a visit to the Defence Science and Technology Laboratory (Dstl) at Porton Down science park near Salisbury, southern England, on October 15, 2020. - The Queen and the Duke of Cambridge visited the Defence Science and Technology Laboratory (Dstl) where they were to view displays of weaponry and tactics used in counter intelligence, a demonstration of a Forensic Explosives Investigation and meet staff who were involved in the Salisbury Novichok incident. Her Majesty and His Royal Highness also formally opened the new Energetics Analysis Centre. (Photo by Ben STANSALL / POOL / AFP)

Queen Elizabeth II on Thursday made her first public visit outside a royal residence since the start of the coronavirus outbreak, visiting a top secret research lab but appearing without a face mask.

The 94-year-old monarch and her grandson Prince William visited the Defence Science and Technology Laboratory (Dstl) at Porton Down in southwest England, which has been helping to study Covid-19.

“It’s doubling itself again,” the queen remarked when discussing the current second wave. Being told it was on the rise, she said: “Well, I suppose it was expected?”

“Predicted ma’am, yes,” replied Professor Tim Atkins, who coordinated Dstl’s response, to which the monarch responded: “With all these horrible new things…”

Britain’s Queen Elizabeth II (C) and Britain’s Prince William, Duke of Cambridge (R) arrive with Dstl Chief Executive Gary Aitkenhead (L) at the Energetics Analysis Centre as they visit the Defence Science and Technology Laboratory (Dstl) at Porton Down science park near Salisbury, southern England, on October 15, 2020. – The Queen and the Duke of Cambridge visited the Defence Science and Technology Laboratory (Dstl) where they were to view displays of weaponry and tactics used in counter intelligence, a demonstration of a Forensic Explosives Investigation and meet staff who were involved in the Salisbury Novichok incident. Her Majesty and His Royal Highness also formally opened the new Energetics Analysis Centre. (Photo by Ben STANSALL / POOL / AFP)

The queen and William did not wear face masks but arrived separately and stayed two metres apart, while aides said all 48 people due to come into close contact with the royals had been tested for coronavirus.

It was the monarch’s first public engagement outside one of her homes — where she has had a reduced household staff known as “HMS Bubble” — since she attended a Commonwealth Day service at Westminster Abbey on March 9.

As coronavirus swept across the UK, she and her husband Prince Philip, 99, retired first to Windsor Castle west of London, as a precaution because of their age.

They then spent time at her residences at Balmoral, northeast Scotland, and Sandringham, in eastern England, before returning to Windsor last week.

The queen made two televised addresses to the nation early on in the outbreak, which has killed more than 43,000 people in Britain — the highest toll in Europe.

Britain’s Queen Elizabeth II visits the Defence Science and Technology Laboratory (Dstl) at Porton Down science park near Salisbury, southern England, on October 15, 2020. – The Queen and the Duke of Cambridge visited the Defence Science and Technology Laboratory (Dstl) where they were to view displays of weaponry and tactics used in counter intelligence, a demonstration of a Forensic Explosives Investigation and meet staff who were involved in the Salisbury Novichok incident. Her Majesty and His Royal Highness also formally opened the new Energetics Analysis Centre. (Photo by Ben STANSALL / POOL / AFP)

At Porton Down, the queen and Prince William also met staff involved in identifying Novichok as the nerve agent used to try to kill Russian double agent Sergei Skripal in the nearby town of Salisbury in 2018.

Skripal and his daughter Yulia survived the attack but a homeless woman who came into contact with a perfume bottle thought to have contained the nerve agent died four months later.

Britain and its allies blamed Russia and the incident prompted a mass expulsion of Russian diplomats by Western nations. Moscow denied any involvement.

During the visit the queen formally opened the new Energetics Analysis Centre, an explosive materials research centre.

She and William were due to be shown displays of weaponry and tactics used in counter intelligence.

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