The new landscape opened as a free-to-visit “outdoor gallery” as well as a “living laboratory” to support nature recovery in the face of climate change, the museum said. The £25 million project is expected to be one of the most intensively studied urban nature sites globally.

Her message comes just days after she presented the Wimbledon men’s final trophy to Carlos Alcaraz, in her second public engagement since announcing her cancer diagnosis. Kate, patron of the All England Lawn Tennis and Croquet Club, spoke to ball boys and girls after she entered Centre Court to loud applause on Sunday afternoon. Wearing a purple Safiyaa dress, she attended Sunday’s final with her daughter, Princess Charlotte, and her sister Pippa Matthews.

Kate at Wimbledon on Sunday

Her first appearance since her diagnosis came last month when she attended Trooping the Colour with the rest of the Royal Family. Beforehand, she opened up about her health, admitting she has good days and bad days and explaining how her treatment could be continuing for a “few more months”.

She said: I have been blown away by all the kind messages of support and encouragement over the last couple of months. It really has made the world of difference to William and me and has helped us both through some of the harder times. I am making good progress, but as anyone going through chemotherapy will know, there are good days and bad days.