David McDonald is an independent urban design and conservation consultant with over 30 years’ experience in the historic environment sector. He currently specialises in providing training for built environment professionals including town planners, conservation officers and architects, but also provides advice to a number of private and public sector clients. Marion Barter is an architectural historian and archaeologist with over thirty years’ experience in the public and private sectors. She has been teaching on the RIBA course since 2017. Andrew Shepherd is an architect with over forty years’ experience and currently runs his own practice specialising in heritage projects. He was formerly Director of the Architectural Association’s Building Conservation Course. Anna Joynt is an accredited conservation architect and leads the in-house conservation team at Allies and Morrison. She was part of a working group which developed 2030 Net Zero Carbon Best Practice notes to guide architects involved with church buildings.