The micropalaeontological investigation of rock samples collected in the western part of the English Channel during the Anglo-French research cruise Geomanche II together with samples collected by French and British university workers, have been used to produce a stratigraphic synthesis of the area. The age determinations of samples ranges from Permo-Triassic to Neogene. The interpretation of the structure is based upon continuous reflexion seismic profiling obtained during the Geomanche I cruise. The major structural feature of the area is the large syncline with its axial plane striking WSW-ENE and its axis plunging gently westwards. Two important structures include the structural high between Jersey and Start Point and the Alderney-Ushant structural line. The paper includes a geological map and a list of sample stations.