 Arguably, a third parish should be included, as the parish of Haile (to the northeast) extended to within a few yards of St John's parish church, however this extension contains only fields.St Bridget included most of the small village of Calder Bridge, and the hamlet of High Sella field, along with about half of the nuclear plant.A large portion of the population of St John lived in the former mining community of Thornhill, near Egremont.