A photograph of an ancient oak has won a silver medal at the International Garden Photographer of the Year competition.

Marion Sidebottom's photo of the Epping Forest tree came second in the Action Oak category, which is part of a campaign to protect the tree from threats including pests and diseases.

Since its launch in May the campaign has funded research into the genetics of oak trees and the effects of climate change, drought and diseases.

Lord Gardiner, Department for Environment, Food and Rural Affairs Biosecurity Minister, said: “All the pictures submitted serve as wonderful reminders about why Action Oak was established in the first place, to protect our country’s most iconic trees for future generations to be inspired by and enjoy.’’

A hardback book titled ‘Celebrating Our Oaks’ and foreworded by Dame Judi Dench was launched today (Tuesday) and is available to buy on the Woodland Trust website or in Kew Garden shops.

It features all of the winners of the photography competition plus exclusive contributions from celebrities including Joanna Lumley, Jon Snow and Alan Titchmarsh.

The proceeds will help Action Oak's work.