Having gained degrees in Architecture at The Bartlett and Oxford Brookes University, Siu-Pei spent twenty years working in architectural practices primarily on urban regeneration projects and affordable housing design. Primarily working with social housing providers, her interest has principally remained with estate regeneration which led to a master’s degree in urban design. Continuing with large scale regeneration schemes work has included GLA redevelopment projects, and latterly a transition to work as a design manager with Wates Residential, set up initially as a partnership to work with local authorities to deliver affordable housing. Current projects include the delivery of 386 new affordable homes with Be First as part of the wider Gascoigne Estate regeneration in Barking.