Mapping the Middle to Upper Pleistocene Rhine–Meuse sequence in the southern North Sea based on new core and seismic data has allowed a detailed palaeoenvironmental re‐assessment. An integrated seismo‐lithostratigraphic and malacological biostratigraphic framework is correlated with the optically stimulated luminescence‐dated Rhine–Meuse sequence onshore. The data point to a dynamic interplay of fluvial and marine systems in t...