In order to support the feasibility assessment of the southern retaining structure, Geo-Environmental Services Ltd employed an IRATA rope access team to abseil down the side of the existing structure and drill 6 No. masonry cores into the brickwork. The masonry cores collected were then sent for materials testing, the results used to inform the structural engineers of the stability of the structure. The principal objective of the ground investigation was to determine the depth to competent chalk strata on site in order to inform pile design for the abutments on site. As well as this, there is also a requirement for contamination assessment of the railway embankment for presence of PCB’s/Ash which where likely to be present. Classification of the embankment material, in geotechnical terms, was also required as this was to inform the stability of the slopes and the dimensions of the proposed wing walls. For the rotary boreholes the drilling equipment was transported up-track using a Road/Rail Vehicle (RRV). Due to time constraints, two rotary rigs were deployed simultaneously. This was a complicated project with lots of access issues and three streams of work ongoing on different parts of the site, neverthess the site works were completed in nine days.