The dumping of fuel ash has created a soil that is very alkaline and therefore different to most soils in London (they are mostly acidic). This means that many plant species that can tolerate the soils of The Ripple struggle to grow elsewhere locally. Pyramidal and southern marsh orchids, grey club rush and wild basil are the most important of these.
The areas of meadow and scrub provide a suitable habitat for 6 red data book species (those that are considered on the edge of extinction) of invertebrates.
The development of the surrounding land has seen quite a few interesting animals disappear from the site. Grey partridge and water vole, for example. Those species that are left are fairly typical of urban nature reserves though perhaps the number of rabbits and flocks of goldfinches are notable.