When temperatures rise from the wintery lows of -60oC to a positively balmy 5oC on the warmest of the Austral summer days, there is a proliferation of frontier science delivered by BAS scientists. Alongside are Ramboll engineers and consultants supporting their work by improving and modernising Antarctic research stations and infrastructure. These projects are part of the preparation works for the new ship RRS Sir David Attenborough, which will be ready for operation in 2019. As BAS’s Technical Advisor, Ramboll’s support has also included specialist technical advice for the team who relocated BAS’s Halley Research Station on the Brunt Ice Shelf. Here we share their experiences of working in the world’s most harsh climate.