[2] His speech to Convocation in November 1640 expressed reservations regarding the new Laudian canons and church imagery: he declared that worship should be "directed to the right object; not to altars, not to images, but to God".
He does not, however, seem to have had any real sympathy with Baxter, who complained that after he was silenced Warmestry, when dean of Worcester, went purposely to Baxter's ‘flock’ and preached ‘vehement, tedious invectives.’ He held for a time the post of lecturer at St Margaret's, Westminster, for his removal from which the parliament petitioned Oliver Cromwell, on 23 June 1657, on account of his delinquency.
While residing in Chelsea, at the house of Lady Laurence, Warmestry was involved in the conversion to Christianity of Rigep Dandulo, a Muslim from Chios.
[10] However, he did gain the following livings: As Dean of Worcester, Warmestry experienced difficulties regarding the installation of the great organ in the cathedral.
After he complained about organ-builder William Hathaway's workmanship in May 1665, on 5 August Robert Skinner (Bishop of Worcester) wrote to Gilbert Sheldon (Archbishop of Canterbury) that Hathaway and consultant Christopher Gibbons were taking advantage of the Dean's "utter ignorance in re musica":[13] the Dean was "ὄνος πρὸς λύραν [an ass to the lyre], had no more skill in an organ than a beast that hath no understanding.