- Lecturer at Church Mission Society, Oxford
- Chief Executive Officer, Global Connections (formerly, The Evangelical Mission Association), Leamington Spa, England
- Mission history of Africa
- Mission and Colonialism in Africa
- African Christianity
- African Religion
- African Diaspora and mission
- Mission in the West
- Non-Western missionary movements
- Mission history in Malawi
- Mission and colonialism in Africa
- Mission history in Africa
- Mission history in the United Kingdom
Yale-Edinburgh-conference
Hope-University (Liverpool)