The British Mission Board is composed of the members of the Provincial Board. Jane Carter is Chair of this Board but it remains a collegiate body, with all decisions being the responsibility of the Board as a whole.

The Unity Synod has entrusted oversight of the work of the Moravian Church in South Asia to the Mission Board and South Asia was granted Mission Province status by the Unity Synod of 2023. The Mission Board has a close relationship with the Western Province of Tanzania as agreed by the Unity Mission Agencies.

In addition the British Province, through the British Mission Board, continues to have close links with and give support to the Elim Home, Star Mountain and Sikonge Hospital. This support is directed through the Unity Mission Agencies who have been entrusted with that responsibility by the Unity Synod.