No details, but known to have been open in 1896, as evidenced by this report[1] in the South-West Suffolk Echo:

April 4th 1896

Robert Reeve, a police sergeant stationed at Glemsford, was charged with assaulting Thomas Brown Porter, a mat trimmer from Glemsford. The complainant said he was walking to Beeton's beerhouse when he saw the Sergeant standing near the Plough Inn, the Sergeant ran after him and grabbed him by the throat and threw him violently to the ground, complainant said he not say he would like a a go at the Sergeant and the Sergeant did not say that he had had enough of him for one night. Walter Game, a silk weaver, said he saw the Sergeant throw Porter to the ground with enough force to break every bone in his body, he afterwards had a conversation with the Sergeant and told him he had exceeded his duty in knocking a little man about, as they were talking a stone hit a tree nearby, a great number of people had gathered and the Sergeant said if he was attacked he would call upon witness and a man named Copsey, in the Queen's name to assist him, Copsey then persuaded four or five men to go home. The bench did not consider that the Sergeant had assaulted Porter. Case dismissed.