This short work by the 18th-century English composer William Boyce is in 2 movements - Largo and Fugue (moderato).
This short work comes from Book 1 of Trevor's 6-part series of "Old English Organ Music for Manuals, published by Oxford University Press in 1966. My copy was purchased early in 1975, and the markings on the score indicate that I played this work twice at services that year - on 9th March and 26th September.