When the diocese outside Kerala was re-organized, diocesan metropolitan Thomas Mar Makarios visited the UK church in 1976 and declared as a parish with St. Gregorios of Parumala as patron saint; Fr. Abraham Aluckal (later bishop Mar Severios) was appointed as its first vicar. In the 1979 re-organization of the dioceses, the London parish came under the diocese of Delhi under the pastoral care of Paulos Mar Gregorios, who visited the parish on a regular basis. When the new diocese of Europe, UK and Canada was formed in 1993, this parish came under the jurisdiction of Thomas Mar Makarios. With the establishment of the new diocese of UK, Europe and Africa, Mathews Mar Thimothios took charge as the Metropolitan of the London parish.
