Strata SE1 SE1 Londoners' fifth favourite tall building, behind 30 St Mary Axe (The Gherkin), The Shard, The Leadenhall Building (The Cheesegrater) and One Canada Square (Canary Wharf). Strata SE1 Strata SE1, nicknamed "Razor" or "Electric Razor", is a , 43-storey building at Elephant and Castle in the London Borough of Southwark in London. Designed by BFLS (formerly Hamiltons), it is one of the tallest residential buildings in London and more than 1,000 residents live in its 408 flats. Strata SE1 is located on the site of Castle House, an early 1960s six-storey office building, which was the first commercial premises at
St Mary Axe of the former buildings of the Baltic Exchange and the UK Chamber of Shipping (destroyed by an IRA bomb in 1992). The street originates as a turn off Houndsditch at its northern end, with traffic flowing one-way southbound, and it originates at its southern end as a turn off Leadenhall Street, with traffic flowing one-way northbound. Both one-way portions of St Mary Axe converge at Bevis Marks, where traffic is forced westward into Camomile Street. "Number 70 St Mary Axe" appears in several novels by the British author Tom Holt as the address of a firm of sorcerers headed by