Interior Designer Dinah Casson became an RDI in 2005. Listen to her engaging interview with Mike Dempsey as part of the RDInsight series. AudioGo to audio Related media RDInsights: Margaret Calvert 13 Jul 2015 Margaret Calvert RDI, one of the most influential graphic designers of our time, speaks to fellow RDI Mike Dempsey in our latest podcast. RDInsights: Dan Pearson 02 Mar 2015 Dan Pearson, recipient of the Royal Designers for Industry Landscape Design award in 2012, is interviewed by fellow RDI Mike Dempsey in this absorbing podcast. RDInsights: Sarah Wigglesworth 11 Nov 2013 Architect and RDI award winner Sarah Wigglesworth speaks to fellow RDI Mike Dempsey. Sarah has been an dRDI since 2012.