Warren qualified as an architect in 1995 after study at De Montfort University and The National University of Singapore, and established DDWH Architects with Donika Dobruna in 2008 after 12 years at a medium sized London Architects practice, where he was an Associate Director.

He has accumulated extensive experience of residential development and mixed-use projects, as well as retail, commercial, and refurbishment of historic buildings, building relationships through repeat commissions.

The broad range of skills developed throughout his career has been essential to success with a smaller architectural practice.


Donika graduated from South Bank University in 1998, before joining the project management team for the restoration and construction of Tate Modern.

Donika has expertise in prime residential, refurbishment and conversion of historic buildings, hotel, retail and office development, mainly in Central London.

She has a particular aptitude for materials and finishes, both internally and for the external envelope of buildings. Much of her work has included sensitive refurbishment of listed buildings, carefully integrated with contemporary new-build development. Many of the projects she has worked on form part of London’s historic cityscape, occupying prestigious, prominent settings. These projects required carefully considered contextual design and negotiations with Planning Officers and surrounding stakeholders.