At St. Peter's, Cornhill, St. Mary's Woolchurch, and elsewhere as he could, he discoursed in favour of close communion and gathered churches, and against tithes and the Westminster Assembly.
In his preaching he predicted the downfall of all governments, on the ground of their enmity to Christ; that of Holland was doomed for tolerating Arminianism.
When articles were exhibited against Feake by a justice of the peace at the Hertford assizes, followers invaded the court, and the judge dismissed the case.
In 1649, on the sequestration of William Jenkyn, Feake received the vicarage of Christ Church, Newgate, and one of the lectureships at St. Anne's, Blackfriars.
On 28 April 1650 he preached at Mercers' Chapel, before Thomas Foote who was Lord Mayor, a Fifth-monarchy sermon which was published.
In October 1651 he was the leader of a radical group breaking away from Cromwell and the army leadership, who thought personal interests were getting the upper hand.