Help us find London's hedgehogs

Urban hedgehog (credit Tom Marshall)Urban hedgehog (credit Tom Marshall)

London's hedgehogs are in trouble, with the city's population falling by nearly a third since 2000. We need to act fast to reverse this decline, but we can only do this with your help.

In the 1950s there were around 30 million hedgehogs in Britain, but today the number is less than one million. In London, these spiky beetle-eating mammals have virtually disappeared from many parts of the capital, with only one last breeding population currently recorded in central London.

We're now calling on everyone in London to help us reverse this shocking decline, and ensure our hedgehogs can continue to live in the city for decades to come. With a few simple steps, we can all do our bit to help.

Seen a hedgehog in London?


One of our biggest priorities is recording where hedgehogs live in London, so we can build an accurate picture of where our help is most needed. As part of our 'Urban Urchins' project we are asking Londoners, if they have seen a hedgehog at any time and in any part of the capital, to fill in our online form and record their sighting!


Mapping London's hedgehogs

All your sightings will be added to our interactive hedgehog map below, where you can click on the icons to discover more about each sighting. This map includes all sightings we have received since April 2017 and is therefore not necessarily an accurate indication of their distribution. However, the more records we receive, the better our understanding of hedgehog whereabouts across the capital becomes.The map will be updated every Tuesday, so keep checking back to see how much our map is growing!



Join us on a hedgehog survey

We'll be using footprint tunnels to survey for hedgehogs at some of our nature reserves during spring and summer. These surveys will take place during daylight hours and will last around two hours. Full training will be provided for those who are keen to take part.

Sign up as a volunteer and help us search for signs of hedgehogs across London. To find out more and to join in, email us on

Hedgehog detective kits

Help us find London’s hedgehogs! Our free Hedgehog Detective Kits contain a special footprint tunnel and instructions on how to survey your own garden for hedgehogs. These kits are only available as part of London Wildlife Trust's Urban Urchins project, funded by National Lottery Heritage Fund. You must live in a London borough and have access to a garden in order to apply. Kits are limited and will be supplied on a first-come, first-served basis. 

 Free hedgehog detective kit


Other ways to help hedgehogs

Hedgehogs are in decline, but fortunately there are many simple things Londoners can do to help them. For more information, and to download a free hedgehogs booklet with tips for your garden or outdoor space, go to