[1] In 1764 Bull succeeded Belsham as pastor of the church at Newport Pagnell,[3] and to increase his income took pupils.
Bull occasionally preached at the great house at Olney, where Newton conducted his prayer meetings with the assistance of William Cowper.
He also induced Cowper to translate into English verse some of the poems of Madame Guyon, printed at Newport Pagnell, with a preface by Bull.
[1] His acquaintance with Mrs. Wilberforce and the Thorntons also brought Bull into the company of Zachary Macaulay, Mr. Thomas Babington, and their friends Colonel Makelcan and Major Handfield.
Besides teaching, Bull frequently preached in London; and Lady Huntingdon's chapels often invited him.
A tract, Seasonable Hints, was written while on a trip to Ireland, printed at Dublin, and distributed during the journey.
[1] Bull contributed to Thornton's edition of Karl Heinrich von Bogatzky's Golden Treasury, published in 1775.
A Brief Narrative of the Rise and Progress of the Independent Church of Newport (1811) was a joint work of Bull and his son Thomas.