While the general principles of sequence stratigraphy are well-established, the detailed distribution of fossils within sequences is less well known. Emery & Myers (1996) indicate that the most distinctive palaeontological information comes from the Maximum Flooding Surface where diverse assemblages, often dominated by planktonic taxa, are characteristic. The palaeontological features of a number of sequences in the uppermost Albian of Southern England have been documented in order to provide detailed palaeontological information on the distribution of foraminiferal taxa within the different systems tracts ( Van Wagoner et al., 1988 ). Within the uppermost Albian in Southern England the Gault Clay Formation presents a well-known succession of marine strata containing abundant Foraminiferida and other microfossils. The ammonite stratigraphy is also well established. Using coastal and borehole sections at Folkestone, samples from cored material recovered prior to the construction of the Channel Tunnel as well as samples from the construction phase, it has been possible to provide a detailed analysis of the uppermost Albian. This includes information on a little known cycle of sedimentation (“Zone 6a”) which is located between the uppermost Gault Clay Formation and the Glauconitic Marl (of Cenomanian age), but which is only known from the area of the Channel Tunnel. In S.W.England coeval strata contain fewer smaller Foraminiferida and other microfossil groups but do contain ammonites and large numbers of orbitolinids [large Foraminiferida]. The correlation of this sequence across the whole of Southern England is presented. Planktonic Foraminiferida (mainly hedbergellids) show a concentration in the Transgressive Systems Tract and around the Maximum Flooding Surface with fewer individuals being recorded in the Highstand Systems Tract. Specimens of Globigerinelloides bentonensis (MORROW), although present throughout, are very much larger around the level of the Maximum Flooding Surface and are associated with a reported occurrence of keeled rotaliporids and planomalinids, together with rare specimens of radiolaria. The benthonic Foraminiferida also show variations through the various systems tracts, especially in S.W.England where specimens of Orbitolina are commonly found associated with a major flooding event in the marginal marine sediments of the area.