The headquarters of insurance giant Aviva in London could be demolished to make way for what would be the city’s tallest tower.
The unique profile of the building has already prompted one contractor to dub the building “The Fang”.
A spokeswoman for the architect said: “It is very early days and a planning application has not been submitted yet.
“We have come up with a scheme that is sympathetic to the surrounding buildings.”
The architect has aimed to preserve the views of the nearby Gherkin with a building that has sloping sides and mirrors the Cheesgrater tower on its other side.