Gustav Milne worked as a professional rescue archaeologist with the Museum of London's Department of Urban Archaeology from 1973 to 1993 on major excavations including a building in Pudding Lane destroyed in the Great Fire of 1666, Saxon and Medieval harbours works, buildings and streets, the Roman Forum and Basilica as well as the associated port and Roman London bridge itself. A series of books and reports have been published on this work. Gustav also contributed to the Museum of London archaeological site manuals now used across the UK and adapted for use internationally. The museum team was also at the forefront of harbour archaeology and, following a series of pioneering excavations he supervised, he facilitated the organisation of a series of international conferences on this theme.
Since 1991 Gustav has lectured at the UCL Institute of Archaeology, taking up a permanent contract in 1993. He served as a consultant for the Royal Commission Historical Monuments (England) and in 1993 set up the Thames Archaeological Survey, with support from the Environment Agency, English Heritage and the Museum of London, for whom he later helped establish their Centre for Human Bioarchaeology, with a major grant from the Wellcome Trust.
More recently, Gustav has co-ordinated research for the Evolutionary Determinants of Health Project, the subject of his most recent book 'Uncivilised Genes, human evolution and the urban paradox'. He has produced a project blueprint for schools entitled 'Containing child obesity through the national curriculum'.
He is currently working with Museum of London Archaeology as Project Leader of a national community-based coastal archaeology programme, the CITiZAN Project, which now features in the Channel 4 series Britain at Low Tide.