Church Marshes is at the base of Kemsley Down (hills near Kemsley), on the banks of Milton Creek where it flows into the Swale. It is partly due to these two navigable waters which link directly to the River Thames and its estuary across the English Channel to Europe, that marshes formed and gave nearby locations their rich history. The marshes are named after Holy Trinity Church in Milton Regis. (See Milton Regis for more details on the church).
