He found himself, however, unable to conform, and was accordingly expelled from Warkworth, Northamptonshire, when acting as curate to Dr. Temple, the incumbent.
Finally he settled in London as assistant to Timothy Cruso at the English presbyterian meeting-house in Poor Jewry Lane.
He continued with Cruso's successor, William Harris, until his death on 21 July 1701, at the age of sixty-four.
By his wife Bridget, who survived him, Fuller had two sons, born in Bristol, Francis and Samuel, who died about 1682.
Calamy describes him as "a facetious pleasant man", while Samuel Palmer adds that he "discovered great sagacity in judging of some future events".