Building study: Yorkton Workshops by Cassion Castle with Pearson Lloyd The practice connected two ‘ramshackle’ buildings of different eras to create a new studio for design firm Pearson Lloyd – a worthy winner of this year’s AJ Retrofit of the Year Award, says Fran Williams comment and share Pearson Lloyd purchased its 550m 2 Hackney warehouse building in 2017 and approached Cassion Castle Architects with the idea of transforming it into a new HQ for the product design practice, a place to test its concepts and furniture prototypes. The multipurpose premises, completed late last year, has just won the AJ’s Retrofit of the Year Award.