[2] HSBC, currently based at 8 Canada Square, will move into the building in 2025, following the completion of redevelopment work being undertaken by Kohn Pedersen Fox.

[3][4] The building was designed for British Telecom by the Property Services Agency in a 'modern and forward-looking' style (though its Portland stone and granite facings recalled the Central Telegraph Office, which had previously stood on the site).

[5] In 2019, BT sold the building and revealed plans to relocate their offices to 1 Braham Street near Aldgate East tube station.

[7] As of 2023, the 81 Newgate Street was being very substantially altered in what was described as a 'retrofit and expansion' of the property: the building's structural frame is being retained but it is otherwise being entirely rebuilt to create flexible office space, retail units and a roof garden with a restaurant.

'Its massing will change considerably, with a portion of the front removed to reduce its impact on key views and new bays added stepping down from north to south creating accessible terraces'.