On 24 Mar 1548 Thomas Becon (age 36) was instituted to the rectory of St Stephen's Church, Walbrook.

On 16 Aug 1553 Thomas Becon (age 41) was committed to the Tower by an order of council, as a 'seditious preacher'. He was released on 22 Mar 1554 after which he travelled to Strasbourg.

Henry Machyn's Diary. 16 Apr 1560. The xvj day of Aprell was bered in the parryche of sant Myghell in Quen-heyff master John Bedy .. sqwyre latt clarke of the gren cloth unto quen [Mary?] with the compene of the Clarkes of London, and then cam the morners, and then the corse, with vj skochyons with ys armes a-pone hym, and master Beycun (age 48) mad the sermon, and after to ys plasse to dener, for ther was a grett [dinner].

On 22 Oct 1560 Thomas Becon (age 48) was admitted to the rectory of Buckland, Hertfordshire.

On 10 Aug 1563 Thomas Becon (age 51) was appointed to the rectory of St Dionis Backchurch.