The building was designed by
HOK International and constructed by Canary Wharf Contractors. Designed after the
9/11 terrorist attacks, the building is constructed around four staircase columns with a large, central column containing the lifts and toilet facilities. The building manual states that there is enough room in these columns to contain everyone who works in the building, in the event of a security alert. The building was planned to be 50 storeys in height, but was scaled down to 31 after the 9/11 terrorist attacks. It is linked by walkways to the
Canada Square shopping mall and
Canary Wharf Underground station. ==See also==