The Woodland Trust has issued a warning to visitors to leave barbecues at home to avoid the catastrophic impact fires can have on wildlife and landscapes.

The charity has seen more than 30 fires across its sites since 2018, the worst of which, on moorland at Smithills Estate, which caused more than £1 million of damage ­— devastating a third of the 1,700-hectare site and killing around 2,000 trees as it burned for 42 days.

The trust which owns and cares for more than 1,000 sites across the UK, has warned that many summer wildfires are started accidentally by lighting campfires or disposable barbecues.

Just a stray spark or a pile of dying embers can have major and long-term consequences for the countryside if it takes light.

The charity said fires of any kind are not permitted at its sites, including campfires and disposable barbecues, and urged people to bring a picnic instead if they are visiting Woodland Trust woods and landscapes.

It warned the UK is one of Europe’s least-wooded countries, and with trees and woodlands essential carbon stores in the fight against climate change and for boosting wildlife, any loss or damage to these habitats is bad for the planet.

Its 'be cool, stay fire-free' message is part of its 'love your woods' campaign which is encouraging people to enjoy their visit while protecting woodlands and nature through simple steps such as staying on the path, taking dog mess and litter home and avoiding swimming, sleepovers and rock climbing.

Woodland Trust head of health and safety Nick Hall said: “Fires have huge implications – both in terms of the financial burden and the effect on our woods and wildlife, which can be catastrophic.

“Climate change also means hotter, dryer periods are inevitable and the risk of starting a deadly fire by taking a barbecue out into the woods or on to the moors is magnified.

“One spark really can spell disaster: you’re gambling with the lives of people and animals by taking one on your summer outings.”