Fraser Bond are the leading lettings and property management agents for One Leadenhall - London EC3V. One Leadenhall at 1 Leadenhall Street is a new development at the junction of Gracechurch Street and Leadenhall Street in the City of London EC3. The new 36-storey building will comprise 28 storeys of office, a ground floor office lobby with retail floorspace and servicing bay, mezzanine office lobby level, retail at basement and fourth-floor levels with a publicly accessible terrace at the fourth floor and five storeys. The existing 8-storey 109,000 Sq Ft building Leadenhall Court from 1988 is.