This delivery represents the final products from a two year post-doctoral research project that was carried out by a consortium led by Durham University. This project was focused on the SW Approaches areas and was one of three projects funded by the NSTA through the Frontier Basins Research Programme. The deliverables include a review of the chronostratigraphy of the SW Approaches and surrounding basins, an evaluation of the impact of Variscan deformation on the hydrocarbon potential of the area, an assessment of the reservoir quality of the Triassic and Lower Cretaceous intervals and the provision of reservoir and source rock distribution maps. The seismic interpretation carried out as part of this project formed the starting point for the final seismic grids provided for this area by the NSTA’s Regional Geological Mapping Project being undertaken by Lloyd’s Register (LR), the interim deliverables from which are also  being released in support of the 31st Frontier Licensing Round. Copyright for all reports produced as a result of the post-doctoral project led by Durham University is held by Durham University. Furthermore, the views and opinions expressed are those of the individual academic authors and do not necessarily represent the view of the North Sea Transition Authority.