St Andrews Parish has a total of 29 Elders Districts spread all over the suburbs of Nairobi City according to the spread of 4000 communicant members of the church. Between 1910 and 1956, St. Andrews Church constituted the Overseas Presbytery of the Church of Scotland. In 1956, the united Presbyte… read morerian Church of East Africa (PCEA) was formed putting together the Overseas Presbytery of the Church of Scotland centered in St. Andrews Church, Nairobi. A partnership with the Church of Scotland was however retained with the senior minister coming from the Church of Scotland and a concordant of St. Andrews Church being appended to that of PCEA. The first African Senior Minister of the parish was installed in 1975 and the separate constitution of St. Andrews removed by the General Assembly in 1988, thus making St, Andrews but one of the ordinary parishes of the church.
One of the greatest contributions of St. Andrews Church to date has been in the expansion of the PCEA within the city of Nairobi and its environs. Between 1975 and 1988 they founded other out stations in other suburbs of Nairobi City. Those stations have now grown to autonomous parishes compelling the General Assembly create Milimani Presbytery that is mainly composed of parishes cropping out of St. Andrews Parish. On 8th December 2013, Milimani north Presbytery was further divided into Milimani North and Milimani South.