The £1 billion project, developed by P&O Developments, will see the existing Elizabeth House demolished and replaced with two office blocks and one residential buildings.
But despite revealing a complete redesign back in July, Allies and Morrison’s competition-winning scheme has been criticised by the design watchdog, particularly over its scale and grouping.
The CABE report said: ‘In overall terms, we are unconvinced by the overall massing arrangement of this scheme, although the residential tower is broadly successful.
‘We are inclined to conclude that any potential resolution of this will involve – as part of comprehensive thought about the massing strategy – a re-examination of the proportions of the office buildings.
‘We hope that this can be addressed and a convincing scheme in the round can be achieved.’
It is understood that discussions over the amount of affordable housing has led to a delay in a planning decision. An application was submitted to Lambeth Council back in July.