Alexis Haslam is a Senior Archaeologist with Pre-Construct Archaeology and has extensive experience of running commercial archaeological sites in London and the South-East. In 2015 he led the investigations on the animal husbandry site at NESCOT in Ewell, which revealed a landscape of Roman chalk quarrying with extensive ritual deposition. Alexis will be taking us behind the scenes of Roman-period commercial excavations in the Historic County of Surrey, including those in Borough High Street in Southwark.