The Outcome
 

With the exception of the Newfoundland Regiment's success, little ground was gained for the British in their offensive on October 12. In fact, Brigadier-General Cayley later wrote to Newfoundland's Governor to report that the Newfoundland Regiment's success "was the more gratifying as it was the only real success recorded on that day." The Regiment's success, however, came at a heavy price: 120 Newfoundlanders and Labradorians were killed and 119 wounded. 

Brigadier-General Cayley
Book of Newfoundland. Newfoundland’s Part in the Great War by Captain Leo C. Murphy, page 357.

The advance at Gueudecourt was the Regiment's last major action in the Battle of the Somme — although the Regiment did remain in the area for another two months providing relief for other units. The Newfoundland Regiment was then put on reserve, giving it a month of rest before heading back to the front line.