Meet the Team

Knowledge, Experience and PASSION  

Michael Ramsden

Michael Ramsden is the International Director for RZIM and has been part of the organisation since its foundation in Europe in 1997. He is joint Director of the Oxford Centre for Christian Apologetics.

Michael was brought up in the Middle East and later moved to England where he worked for the Lord Chancellor’s department investing funds. While doing research in Law and Economics at Sheffield University, he taught Moral Philosophy and lectured for the International...

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Amy Orr-Ewing

Amy Orr-Ewing is European Director for RZIM Zacharias Trust, and Director of Programmes for the Oxford Centre for Christian Apologetics (OCCA)

Amy is a passionate exponent of a rational Christian response to many of the pressing cultural issues of the day, bringing her formidable theological knowledge to bear on a wide variety of subjects. She gained a first class degree in Theology at Christ Church, Oxford University, before receiving a Master’s in Theology from...

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Dr Tanya Walker

Tanya Walker is the Dean of the Oxford Centre for Christian Apologetics, and an Apologist for RZIM (Zacharias Trust).  Having completed her undergraduate degree in Politics, Philosophy and Economics from Christ Church, Oxford University, Tanya worked in various political roles before returning to postgraduate research.  She holds an MA in Near and Middle Eastern (Islamic) Studies, and a Political Science PhD.  Tanya speaks internationally as an apologist, as well as raising up...

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Professor John Lennox

John Lennox is Professor of Mathematics (emeritus) at the University of Oxford and Fellow in Mathematics and the Philosophy of Science. He is also an adjunct Lecturer at Wycliffe Hall, Oxford and at the Oxford Centre for Christian Apologetics, as well as being a Senior Fellow of the Trinity Forum. In addition, he is an Associate Fellow of the Said Business School, Oxford University, and teaches for the Oxford Strategic Leadership Programme.

Professor Lennox has spoken at...

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Rev Frog Orr-Ewing

Frog Orr-Ewing is the Chaplain at the OCCA and Associate Tutor at Wycliffe Hall. He became the youngest incumbent in the country as vicar of All Saints Church in Peckham after a curacy at St Aldates Church in Oxford. Despite Peckham’s many challenges, over seven years the congregation witnessed marked growth and breakthroughs in community engagement and mission, and now numbers several hundred with youth and childrens activities to about 1000 children in the local area.


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Simon Edwards

Simon Edwards is the UK Director for RZIM Zacharias Trust and Assistant Chaplain of the Oxford Centre for Christian Apologetics. He holds separate degrees in law and economics and a graduate diploma in education from the University of Queensland, Australia.

He has also completed postgraduate studies in theology at the University of Oxford. Simon brings with him a diverse range of Christian ministry, legal, government and teaching experience. Prior to joining RZIM, Simon lived...

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Tom Price

Tom Price is a Senior Tutor at the Oxford Centre for Christian Apologetics and an apologist for RZIM. He studied Philosophy at university and later completed an MA in Christian Apologetics.

In recent years Tom has spoken at universities and churches in Hong Kong, Europe, South Africa, USA and other places across the world. In the UK, he has provided teaching for major conferences such as Keswick, Spring Harvest and BMS Catalyst. He lectures for HTB...

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Dr Sharon Dirckx

Sharon Dirckx is a Senior Tutor at the Oxford Centre for Christian Apologetics (OCCA) and RZIM Apologist. Originally from a scientific background, she has a Ph.D. in brain imaging from the University of Cambridge and has held research positions at the University of Oxford, UK and the Medical College of Wisconsin, USA. Sharon is an OCCA Alumna, and graduated from OCCA in 2005 during its founding year. She is invited to speak and lecture in a variety of contexts across the UK,...

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Dr Max Baker-Hytch

Max joined the OCCA as Senior Tutor in 2016 having completed a D.Phil. in Philosophy at Oxford University in 2014 with a dissertation which examined the philosophical implications of recent accounts of the causal origins of religious belief. He subsequently went on to hold a postdoctoral research fellowship at Oxford as part of the Templeton-funded 'New Insights and Directions in Religious Epistemology' project. He then held a research fellowship at the University of Notre Dame's Center...

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Rev Dr Keith Small

Originally from a ministry background, over the last 20 years Keith has been speaking to churches, university students, community lecture events, and at various training conferences in Europe and the USA concerning Muslim-Christian relations. Keith has a PhD in Islamics and New Testament Studies for his work comparing features of ancient Qur’an and New Testament manuscripts.

Keith is a Manuscript Consultant to the Bodleian Library at Oxford University, and is also an...

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Dr Os Guinness

Os Guinness is an author and social critic. Great-great-great grandson of Arthur Guinness, the Dublin brewer, he was born in China in World War Two where his parents were medical missionaries. A witness to the climax of the Chinese revolution in 1949, he was expelled with many other foreigners in 1951 and returned to Europe where he was educated in England. He completed his undergraduate degree at the University of London and his D.Phil in the social sciences from Oriel College,...

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Ravi Zacharias

Ravi Zacharias is Founder and President of Ravi Zacharias International Ministries (RZIM). Zacharias has spoken all over the world for 45 years in scores of universities, notably Harvard, Dartmouth, Johns Hopkins, and Cambridge. He has addressed writers of the peace accord in South Africa and military officers at the Lenin Military Academy and the Center for Geopolitical Strategy in Moscow. At the invitation of the President of Nigeria, he addressed delegates at the First Annual Prayer...

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Rev Professor Alister McGrath

Alister McGrath is the Andreos Idreos Professor of Science and Religion at the University of Oxford. He was the Founding President of the Oxford Centre for Christian Apologetics (OCCA). His previous posts include being Professor of Theology and Education at King’s College, London, and Professor of Historical Theology at Oxford University. 

McGrath gained first class honours from Oxford University in Chemistry (1975) and first class honours in...

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