Rare creatures such as skylarks, grey partridges and smooth snakes have found new habitats on the restored grounds along with foxes, deer, frogs and swans.
Viridor talent-spotted one of its own employees to photograph the animals allowing it to monitor the different species found on different sites.
Viridor external affairs manager Dan Cooke said: As a company we are investing a lot of time and resources into restoring landfills for the purpose of habitat creation and biodiversity. We have created different types of habitats such as heath land on Devon and Dorset sites, brettland [grassland], and woodland.
Viridor gas technician and now wildlife photographer Lee ODwyer has been taking pictures of landfill wildlife in the spring and summer months for two years now. He visits operational sites as well as the 20 closed sites Viridor look after.
He said: People dont realise restored landfills are exceptional places and are often better than before they were landfills. Some sites only take a couple of years before they become attractive to the insects bird and butterflies.
The skylark has declined by 75 per cent in the last decade through land being used for agriculture but they have been thriving on the landfill grassland sites. The woodlark, which has been found on a site in Tatchells, Dorset, is classified as a schedule one bird, which means it is a protected species. ODwyer even found all five species of British reptiles on one site.
Additionally, at a restored Somerset site Viridor has placed the Carymoor Environmental Education Centre, where schools can go visit a restored landfill site. University students are also utilising the space for research projects on creating different habitats and assessing the species living there.