Il est l'un des tout premiers mathématiciens européens à travailler sur la trigonométrie.
On lui a attribué le traité The equatorie of the planetis bien que Geoffrey Chaucer ou un autre contemporain ait pu en être l'auteur.
Bibliographie
Larry D. Benson, The Riverside Chaucer (3rd edn., Boston: Houghton Mifflin, 1987)
Robert T. Gunther, Historic Instruments for the Advancement of Science: A Handbook to the Oxford Collections Prepared for the Opening of the Lewis Evans Collection on May 5, 1925 (Oxford: Oxford University Press, 1925), pp. 19-20
Derek J. Price, ed., The equatorie of the planetis (Cambridge: Cambridge University Press, 1955)
F. N. Robinson, The works of Geoffrey Chaucer (2nd edn., Boston: Houghton Mifflin, 1957)
Keith Snedegar, 'Simon Bredon, a Fourteenth-Century Astronomer and Physician', in Lodi Nauta and Arjo Vanderjagt, eds., Between Demonstration and Imagination (Leiden: Brill, 1999), pp. 285-309
C. H. Talbot, 'Simon Bredon (c. 1300-1372), Physician, Mathematician and Astronomer', British Journal for the History of Science 1 (1962), 19-30