The Convocation currently consists of nine parishes and ten missions scattered over six countries. Some of the congregations began in the early 1800s, others in the last two or three decades. All of them are very international and multi-denominational in makeup, offering worship and Christian study in a context that invites and welcomes many.
An overview of each congregation is provided in the document: Convocation Parishes and Missions Congregations. (This document is available as a PDF download here.)
 St. Alban’s, Ramstein, a chapel located on the American Air Force base of Ramstein, Germany, has long been considered to be a member congregation of the Convocation, with chaplains being afforded an automatic license as a priest of the Convocation.