In 1593, he was overseeing the building of the Great Court of Trinity, "one of the outstanding college setpieces in Britain",[REF] and from 1596 to 1598 he worked on the newly founded Sidney Sussex College [REF].
Symons produced designs for building work at King's College in 1602/3, and 1604 found him back at work on the hall and kitchen at Trinity [REF].