Karl has been invited by civil society organisations, academia, governments and the media across Europe, Asia and USA to speak on social impact investing. Has guest lectured at the Universities of Oxford and Cambridge; advised HM Treasury on EU social investment regulations; was invited to submit evidence for alternative finance to the UK's Parliamentary Commission on Banking Standards; been asked by the UK Cabinet Office to represent the UK on social investment at EU level; was invited by US Secretary of State to be a plenary panelist at the Global Impact Economy Forum in 2012.
In 2011, he co-authored ‘Making Good in Social Impact Investment: Opportunities in an Emerging Asset Class'.
Karl holds an MBA specialising in entrepreneurship and project management, writing his dissertation on data interoperability standards and collaboration principles in the building design industry. He started his career as an architect and project manager for multidisciplinary design teams, and development leader for public and private sector construction projects. He was the founding Chair of Friends of the Crystal Palace Subway, a community-led initiative to reopen a historic community asset to the public.