Sir David Attenborough has revealed one simple but genius way Londoners are protecting hedgehogs , helping boost populations in urban areas.

Hedgehogs are in decline across the UK and are listed as “Vulnerable” on Britain’s red list of mammals . Their demise is often linked to habitat loss, road casualties, injuries and a lack of food.

However, numbers in cities are starting to stabilise, and efforts to give the little creatures an extra boost are gaining momentum.

David Attenborough’s simple tip for protecting hedgehogs

According to the Wildlife Trust, up to 335,000 hedgehogs are estimated to die on British roads every year – with roadkill incidents often peaking in the summer months.

Londoners are making ‘hedgehog highways’ in their back garden (PA)

But hedgehogs need up to 100 grams of food every day, especially if they are searching for a mate.

This means they are often forced to travel 2km each night – often braving dangerous roads in search of insects or pet food.

City gardens are often a great…