ReTurn is a significant UK property industry research initiative managed by Remit Consulting, focusing on monitoring the return of workers to major office locations across ten UK cities post-COVID-19 lockdown relaxations. The project collects daily data on staff occupancy in key office buildings, ensuring anonymity by aggregating non-identifiable information, covering cities such as Belfast, Birmingham, Bristol, and London. Aimed at providing insights into workplace reoccupation trends, ReTurn serves as a valuable resource for understanding the evolving dynamics of office use in the UK's major urban centres.