The Isle of Sheppey is one of the best outcrops of the London Clay with 2 main sites, one is from Warden Point to Minister having one of the largest outcrop of fossil rich beds which is over 6 km long! This has both in-situ specimens and a large cliff section which allows for both beach and foreshore collection and has led to the discovery of many important finds, you are almost guaranteed to find something if you walk this path.
The other site is Elmley Hill which is part of a nature reserve and is much more secluded, this site is much harder to reach and has a smaller outcrop but is a different division of London Clay so different species of fossils can be found here.
The Warden's Point to Minister walk is around 6km and is one of the best areas to find London Clay and is the largest exposed area of the London Clay. This division of the London Clay has yielded some of the most scientifically important finds of the London Clay as it contains almost all of the different species of London Clay fauna and flora giving it some of the best biodiversity of any London Clay sites.
When looking for smaller fossils the beach tends to yield a large amounts of finds, in the shingle patches shark teeth, crabs and other small fossil can be found fairly frequently. Larger finds can be found in the foreshore at low tide or also on the beach. The cliffs can be unstable though, so it is best to not stand too close to them. There is also a recent issue in landfill falling onto the beach.
This is an image of Elmley Hill.
(Photo taken by James Black, premission also granted by James Black)
Elmley Hill is a much smaller site and much harder to reach than the Warden's point to Minster Coast line and is not recommended for beginners. Elmley Hill is located at a nature reserve on the Isle of Sheppey.
Elmley Hill has great varity of London Clay fossils and containers great examples of crabs among many other species.