The first Lloyd's building (address 12 Leadenhall Street) had been built on this site in 1928. In 1958, due to expansion of the market, a new building was constructed across the road at 51 Lime Street (now the site of the Willis Building). Lloyd's now occupied the Heysham Building and the Cooper Building.
The 1928 building's entrance at 12 Leadenhall Street was preserved and forms a rather incongruous attachment to the 1986 structure. Demolition of the 1958 building commenced in 2004 to make way for the 26-storey Willis Building. (ウィキペディアより抜粋)