The rooftop extension for client RBS REAM is based on the concept of the ‘fifth elevation.

The architects say this follows the principle that the view from adjacent tall buildings backing onto the scheme is as significant as conventional views from the street.

Its reconstituted stone pavilion scheme will sport a green sedum roof, improving views from a clutch of surrounding tall buildings, including the Gherkin and Cheesegrater.

Structural engineers for the project are Sinclair Johnston.