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After undertaking the compulsory two-year residency at Oxford, and awaiting his inception in theology at Oxford, he is thought to have taught philosophy at the Franciscan ''Studium Generale'' in London, and to have worked alongside Walter Chatton and Adam de Wodeham (his foremost disciple)<ref>The view that Ockham was resident in London between 1321

After undertaking the compulsory two-year residency at Oxford, and awaiting his inception in theology at Oxford, he is thought to have taught philosophy at the Franciscan ''Studium Generale'' in London, and to have worked alongside Walter Chatton and Adam de Wodeham (his foremost disciple)<ref>The view that Ockham was resident in London between 1321

and 1324 was first proposed by Father Gedeon Gal in the introduction to the critical edition of Ockham's Summa logicae in 1974 (Introduction to ''Ockham, Summa logicae'' (Opera Philosophica 1), ed. Ph. Boehner,G. Gal, and S. Brown. St. Bonaventure 1974, but was challenged by Courtenay, 1990.  Courtenay regards the 'London period' as probable, but far from certain.</ref>. From this 'London period' date most of Ockham’s important philosophical works, his eucharistic treatises (''De quantitate'' and ''De Corpore Christi''), and the influential ''Summa Logicae''.  

and 1324 was first proposed by Father Gedeon Gal in the introduction to the critical edition of Ockham's Summa logicae in 1974 (Introduction to ''Ockham, Summa logicae'' (Opera Philosophica 1), ed. Ph. Boehner,G. Gal, and S. Brown. St. Bonaventure 1974, but was challenged by Courtenay, 1990.  Courtenay regards the 'London period' as probable, but far from certain.</ref>. From this 'London period' date most of Ockham’s important philosophical works, his eucharistic treatises (''De quantitate'' and ''De Corpore Christi''), and his great work, the ''Summa Logicae''.  

In this period, Ockham also began his ''Quodlibeta'', completed in Avignon c.1325, and revised his ''Sentences'' commentary (resulting in the ''Ordinatio'', the version of the commentary that Ockham defended before the examination committee in Avignon). Ockham encountered opposition to the work he completed in England, even from fellow friars such as Walter Chatton, whose students accused Ockham of heresy. This Franciscan opposition probably also led to Ockham’s appearance before the provincial chapter of 1323.  

In this period, Ockham also began his ''Quodlibeta'', completed in Avignon c.1325, and revised his ''Sentences'' commentary (resulting in the ''Ordinatio'', the version of the commentary that Ockham defended before the examination committee in Avignon). Ockham encountered opposition to the work he completed in England, even from fellow friars such as Walter Chatton, whose students accused Ockham of heresy. This Franciscan opposition probably also led to Ockham’s appearance before the provincial chapter of 1323.