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Chris Packham is on a mission to find out how much wildlife can be found in the Great British garden.

In Welwyn Garden City, eight residents have agreed to let naturalists explore their backyards for a year.

As the team sets up netting, collects samples and ‘vacuums’ the lawns for microscopic life, Chris reveals the hidden world of our smallest garden residents.

You’ll never look at your borders in the same way again.