Queen Elizabeth II carried out her first major engagement since the United Kingdom's coronavirus lockdown began in March, visiting the Porton Down military research facility on Thursday. The lab in south-west England was involved in dealing with the 2018 Novichok nerve agent attack on a Russian ex-spy in the nearby city of Salisbury.
The 94-year-old monarch, who spent the national lockdown at Windsor Castle, has carried out her official duties remotely by video or telephone, or at her palace, since social restrictions were introduced.
For her first public outing, she made a rare joint appearance with her grandson Prince William, with neither wearing face masks although all involved were socially distanced.
The top-secret Defense Science and Technology Laboratory identified the nerve agent used to attack former spy Sergei Skripal and his daughter Yulia two years ago. Britain has accused two Russian agents backed by Moscow of carrying out the attack, a charge the Kremlin has rejected.
Russian officials are also accused of using Novichok to poison Kremlin critic Alexei Navalny in August.
During their trip, the royals met the Porton Down staff and military personnel who were involved in the Novichok clear-up operation, along with scientists helping the response to the COVID-19 pandemic.
The formal purpose of the trip was to open the lab's new Energetics Analysis Centre, where the queen and the prince were given a demonstration of a forensic explosives investigation.
They also toured the lab's Energetic Enclosure to see a display of weaponry and tactics used in counter intelligence.
Porton Down was founded in 1916 as Britain's chemical and biological weapons laboratory, where defense ministry scientists carried out secret experiments involving some 20,000 servicemen, leading to the death of one from exposure to sarin nerve gas.
Since the 1960s, it has focused on developing countermeasures and defense and security technology, although its secret structure has always led to speculation about its activities, especially among flying-saucer theorists.
On Thursday, following the routine of much of her 68-year reign, she unveiled a plaque at Porton Down and signed the guestbook. Well, it proves we’ve been here, doesn’t it? she joked.