“Nature gives us so many beautiful colours – the purples of cabbage and the orange of pumpkins that are just glorious. I serve food on plain white plates to showcase the food.”

Petersham Nurseries is the embodiment of quintessential English country charm with its fabulous flowers, battered zinc-topped tables, bare dirt floors and quirky vintage objet d’art. Nestled by the river in a picturesque enclave of leafy Richmond-upon-Thames it has a green Michelin-starred café, much loved by A-list celebrities and locals alike. It’s also rumoured to have had the odd royal visitor, impressed by the nurseries’ organic credentials and ethos. Little wonder then that when Sir David Attenborough and Greta Thunberg met for the very first time, while filming her new three-part BBC documentary to discuss the future of climate change, that historic meeting took place here.