This report presents the interim results of an archaeological evaluation, strip map and sample and Palaeolithic investigations carried out by MOLA at the former National Grid Northfleet West substation, Southfleet Road, Swanscombe. The investigations consisted of excavating 112 evaluation trenches, and 8 Palaeolithic/geoarchaeological test pits. The strip, map and sample excavation was undertaken within the footprint of a proposed access road and covered an area c 3037m2. The Palaeolithic investigations consisted of excavating a large stepped trench c 103m in length (Palaeolithic trenches 1 and 2), and a test pit c 5 x 2m (Palaeolithic trench 4). The investigations took place between the 7th July and 4th September 2014. Lower Palaeolithic flint ‘Clactonian’ artefacts (c 400,000 BP) were recovered from the strip, map and sample area in the northeast of the site. More were found in an evaluation trench opened in the same area. These are thought to be broadly contemporary with some of those found at the adjacent Ebbsfleet elephant butchery site immediately to the east. A significant quantity (over 200) of Late Upper Palaeolithic flint artefacts (c 15,000–10,000 BP) including long blades, cores and debitage were recovered from deposits in evaluation Trench 423. The density of artefacts indicates the presence of a significant flint tool manufacturing industry on the site. Across the site a number of pits and ditches were recorded. These were at a shallow depth, sealed by the plough soil. The majority of these features were located in the northeast and southeast of the site on higher and/or level ground. Small quantities of pottery, flints and other artefacts were recovered from these features. Further pottery and flints were recovered from colluvial deposits. An initial examination of the pottery indicates presence and/or activity on the site during the Bronze Age, Iron Age, Roman and medieval periods. However, an accurate chronology for these features and associated finds will be presented in a full evaluation report upon completion of the analysis of the finds and samples.