One London
One London (formerly known as 1 Undershaft) is a 74-storey, 309.6-meter commercial tower planned at the heart of the City of London's Eastern City Cluster.
Official WebsiteOne London (formerly known as 1 Undershaft) is a 74-storey, 309.6-meter commercial tower planned at the heart of the City of London's Eastern City Cluster. Once complete in 2033, the building will become the UK capital's joint tallest, matching the height of the Shard across the Thames. The bulk of the program serves as commercial workplace for between 7,000 and 10,000 workers, with the top of the building dedicated to civic and public uses — including the highest bar in London at the summit and, on the top two floors, London Museum education spaces where school children and young people can experience London from on high. The 11th floor carries a public garden integrated into the building's expressive structural language: a forest of weathering steel pillars that architect Eric Parry calls 'giant redwoods,' slim but powerful, branching to support the garden while continuing up to carry the 300-meter tower above. The building targets BREEAM and NABERS UK sustainability ratings, with a landscape strategy delivering an advertised 960 percent biodiversity net gain across the site. The white-skinned, passively shaded facade replaces the typical sealed glass tower with a more open, vertically gardened expression — a high-rise that, in Parry's framing, addresses the sky rather than the urban block.