Calum started professional life as an aeronautical engineer and retrained as a lawyer with a London City law firm. Calum went on to specialise in IP litigation with a focus on patent disputes in the electronics and telecoms sector for clients including Intel and Nokia. After 7 years in private practice Calum moved in-house to Kraft Foods to lead the European Patent & Design function based in Zurich. After 5 years with Kraft Foods, Calum joined Barclays in 2012 as the Global Head of Intellectual Property. Calum is an associate member of CIPA and sits on the UK Council of AIPPI.