 The current church of St John at Hackney was designed by James Spiller and built in 1792, when demand in the parish of Hackney was in excess of 3,000 parishioners.At an original , at the time the parish was the largest civil parish in Middlesex of those which joined the County of London (created in 1889).The vast, classical, stock-brick building, on a Greek Cross plan, can hold around 2,000 people.