Following the untimely death of his brother, Stewart was determined to uphold the Papworth family name and see that his brother’s wishes were fulfilled. Marshal had stated in his will that he wished part of his estate to be used to educate agricultural students from developing countries. Stewart took over the management of Marshal’s farm until the sale was completed and helped to establish the Marshal Papworth Fund.
Stewart has taken an active interest in all activities related to the Fund since its inception; he meets with and gets to know each student who comes to the UK to study, as well as attending a number of the organised field trips.
Stewart was inducted into the College of Benefactors at the University of Reading on behalf of the Marshal Papworth Fund. He is a lifetime member of the East of England Agricultural Society and a member of Cambridgeshire R.A.B.I. committee.