The Duchess of Cambridge will join the monarch at Kings College London where they are set to reopen the newly renovated Grade II listed Bush House.
Kate, 37, and the Queen, 92, have of course attended plenty of occasions together over the past seven years but this will be their first solo outing together since March 2012.
At the time, just 11 months after she married Prince William, Kate joined her grandmother-in-law in Leicester as part of the Queen’s Diamond Jubilee tour of the UK.
Meanwhile Meghan Markle carried out her first solo engagement with the Queen in June, with the pair visiting Cheshire together just a month after the royal wedding in Windsor.
The upcoming engagement on March 19 will see Kate accompany Her Majesty as she reopens Bush House – formerly the home of BBC World Service and now being leased by Kings of which the Queen is patron.
She visited back in 2012 to open Somerset House East Wing alongside Prince Philip while Kate was last there in 2018 to see the work being done to support new mothers at the Maurice Wohl Clinical Neuroscience Institute.
The pair was last seen together earlier this week when they were joined by William, Harry and Meghan at Buckingham Palace for a reception marking 50 years since the investiture of the Prince of Wales.
Kate then had a second engagement on Wednesday when she and William paid a visit to Blackpool in the torrential downpour.
The royal couple were also met by local dignitaries including the Mayor and Mayoress of Blackpool, Gary and Debbie Coleman, as learnt about the town’s investment and regeneration projects.
In other royal news royal commentator Richard Fitzwilliams has claimed that Meghan and Harry’s baby will ‘heal’ the royal feud between the Cambridges and the Sussexes.
Meanwhile Victoria Arbiter has revealed why Kate and Meghan are not princesses – and it’s all down to the Queen.