Graham and Debbie have been working among the Mamprusi people of Northern Ghana since early 1996.

The Mamprusi are a rural, predominantly Muslim people group with very little Christian witness, particularly in the area where Graham and Debbie are working. They work alongside missionaries from the Bible Church of Africa to preach and teach in various Mamprusi villages.

Their work is to help disciple new Christians in each place and train Mamprusi believers to lead their own people.