The developer said it was going ahead with the final two phases of its Paddington Central and Hammersmith Grove mixed-use schemes.
The latest trading statement said: “We have secured planning permission for the final two phases of PaddingtonCentral, Four and Five Kingdom Street, providing respectively 140,000 sq ft and 210,000 sq ft of prime office accommodation.
“We are progressing detailed designs for these buildings with a view to commencement on site in early 2011.
Designed by architects Allies and Morrison, the two new buildings are set perpendicular to each other.
Sitting adjacent to the Novotel London Paddington which was completed in 2008, and the currently under construction Two Kingdom Street that’s being built by Skanska.
Heavily glazed, the tallest will be fourteen floors including plant and the ground mezzanine.
In West London, the firm has revised its Hammersmith office plan, once dubbed the Strawberry. The plan has been scaled back from a striking 320,00 sq ft round building to two more conventionally-shaped buildings of a 280,000 sq ft at the West London site.
Development Securities also said it had placed a bid to buy the former Middlesex Hospital site, west of Tottenham Court Road.
