Fellowship of Independent Evangelical Churches (FIEC) in 1922 (though at the time it was called 'The Fellowship of Undenominational and Unattached Churches and Missions'). Poole-Connor's biography is called Contender for the Faith.
Here's a scapple of the first part of chapter 7 of Evangelicalism in England on the nineteenth century. In it, he begins by looking at the eighteenth century. He makes two interesting points: the eighteenth-century revival wasn't restricted to the Wesley-Whitfield circle; and there was a strong attachment by the major players to the Church of England.