• Reviewer – Pragmatics and Society (John Benjamins, Amsterdam)
• Reviewer – Journal of Pragmatics (Elsevier)
• Reviewer – Sage Open Journals (Sage, Los Angeles, London)
• Reviewer – Journal of Computer-Mediated Communication (Wiley-Blackwell)
• Reviewer – International Journal of Applied Linguistics (Wiley)
• Reviewer – Social Semiotic (Taylor & Francis)
• Reviewer – Discourse, Context and Media (Elsevier)
• Reviewer – Journal of International and Intercultural Communication (Taylor & F)
• Reviewer – Discourse & Society (Sage)
• Reviewer – Discourse & Communication (Sage)
• Reviewer – Terrorism and Political Violence (Taylor & Francis)
• Reviewer – Media, War & Conflict (Sage)
• Reviewer – African Affairs (Oxford)
• Reviewer - Critical Studies in Media Communication (Taylor & Francis)
• Reviewer - Critical Discourse Studies (Taylor & Francis)
• Reviewer – Africa Today (Indiana)
• Reviewer - Social Movement Studies (Taylor & Francis)
• Reviewer – Language and Communication (Elsevier)
• Reviewer – Behavioral Sciences of Terrorism and Political aggression (Taylor & F)
• Reviewer – African Studies (Taylor & Francis) etc.

External Examiner outside Home University

• External Examiner, Hong Kong Polytechnic University, Hong Kong.
• External Examiner, Universiti Kebangsaan Malaysia (The National University of Malaysia)
• External Examiner, The Institute of Postgraduate Studies & Research (IPSR), Universiti Tunku Abdul Rahman, Bandar Barat, Kampar, Perak, Malaysia.
• External Examiner, Research and Development Centre, Bharathiar University, Coimbatore, Tamilnadu, India.
• External Examiner, Postgraduate School, University of Lagos, Akoka, Lagos, Nigeria
• External Assessor, University of Calabar, Calabar, Nigeria
• External Assessor, Redeemers University, Ede, Nigeria
• External Assessor, Anchor University, Ayobo, Lagos, Nigeria