BBC

"After having recently painted my summerhouse white, I decided to capture these delicate Cosmos flowers, creating vivid white tones in this black-and-white composition," she said.

The judges said: "It is easy to turn any colour photograph into black and white - but through clear intent, Anne chose the set-up before photographing to dramatic effect.

"This work uses black and white to add something special, not take something away.

"Both the black and the whites are punchy and incredibly detailed."

Ethereal Cosmos will feature in a book and exhibition at the Royal Botanic Gardens, Kew, in 2021.

Here are other winning photos from the contest, with captions by the photographers.