David is the founder and CEO of Polymath Consulting who work on projects and advise organisations across the Cards & Payments industry. 
David is also an active mentor, NED and advisor to boards.  He advises and/or sits on the boards of:  Cybertonica, 3S Money Club, Trezeo, and Curve along with others.
His is also the co-founder of Konsentus that provides TPP regulatory & identity checking for PSD2 open banking.
In consultancy he has worked across the complete value chain helping banks with their overall E-Money/Prepaid and Emerging Payments strategy right through to market entry analysis; as well as working with telcos, processors and  programme managers on segment analysis, certification and membership applications.  
Geographically his client assignments have covered Russia, South Africa, Middle East, Europe and Asia; in reality clients have come from all continents other an Antarctic.
He is an active contributor to forums on linkedin and a regular media commentator on the future of e-money/emerging payments.  
He is a regular chair of conferences and events from Mumbai to Moscow; Las Vegas to London and Johannesburg/Nairobi in Africa to Colombo/Sri Lanka.