Billy Mavropoulos

co-founded bureau de change with Katerina Dionysopoulou b-de-c.com Billy Mavropoulos studied at the Royal College of Art and trained at Foster+Partners. Prior to founding Bureau de Change, Billy worked as an independent design consultant on projects for the Tate Modern, Tate Britain

Katerina Dionysopoulou

co-founded bureau de change with Billy Mavropoulos b-de-c.com Bartlett graduate Katerina Dionysopoulou trained at Foster+Partners before joining Heatherwick Studio. During this time she led the team designing the UK Pavilion at the Shanghai Expo, winning the coveted Lubetkin Prize. She later worked alongside Danny Boyle as