
Ade Ajibulu
BA, MPhil Managing Consultant , United KingdomAde Ajibulu has over 30 years’ experience in communications. In addition to business modelling and strategy, Ade is also an expert on regulation, previously for Ofcom and now as a consultant.
Ade Ajibulu is a highly experienced regulatory economist and business strategy analyst with over 30 years’ experience in the telecoms sector.
Ade began working in telecoms as a Senior Consultant for Analysys Ltd., after completing an MPhil at Cambridge University, and advised a wide range of commercial and public sector organisations. Ade was responsible for project management and worked on universal service demand forecasting, regulatory economics and business planning issues.
Subsequently at Ofcom, Ade led the economic analysis in many of Ofcom’s key projects on spectrum, in particular auctioning spectrum for mobile communications. He also worked on wider competition issues in the mobile sector.
Since 2011, Ade has been working as an independent consultant in these same areas, for example: analysis of business models and socio-economic benefits for 5G use in the EU; analysis of universal service fund and costs in Liberia and Malawi; advising on spectrum management strategy and auction policy in Pakistan, Kenya and Botswana; and assessing policy options to increase affordability of mobile broadband in South Africa for the World Bank.
Education
Cambridge University, UK
- BA – Economics
- MPhil – Economics
Other team members

Sebastiaan van den Deijssel
Managing ConsultantSebastiaan has over 15 years of professional experience in marketing, product development, sales, customer care, BSS/OSS, and business modelling for Telecom. He is one of the foremost experts in the field of MVNEs and MVNOs. He gained his experience in key roles within MNOs, MVNOs as well as MVNEs in Europe, Middle East, Africa, Caribbean and the USA.

Stefan Zehle
Chairman and CEOStefan is the CEO and the co-founder of Coleago Consulting. He has been working in telecoms since 1987 with experience in over 65 countries. Stefan is a director of a start-up mobile operator, and an expert in spectrum valuation and licensing.

Scott McKenzie
DirectorScott is one of the directors of Coleago and is a highly experienced consultant with over 30 years’ experience in the telecoms and high technology industries. Since joining Coleago, he has led numerous complex spectrum, fibre, MVNO, regulatory, transaction and training projects.