The son of Moses Henry and Sarah Ann Peake, Sidney was born in Heath Town, Wolverhampton, in about 1895. In 1911, he was living with his parents at Deans Road, Heath Town, alongside his sisters Gladys, Dorothy, Rose, Florence and Lilly, and brothers George and Leonard.
Sidney became a Lance Corporal (Acting Corporal) in the 1st Battalion of the South Staffordshire Regiment, (number 40652). His name was listed in the Express & Star on 4 May 1917 among the wounded, but he recovered. Sidney was awarded the Distinguished Conduct Medal following his service in Italy, as cited in the London Gazette on 11 March 1920:
He has invariably shown himself to be a most gallant and energetic soldier and a good leader of men. He did excellent work in August 1918, during a raid on Canove. When his Lewis Gun jammed he led his section forward armed with his revolved, entered a dugout and captured five prisoners. He again distinguished himself during the attack on St Michele di Piave on 27th October 1918.
He married Gladys L. Ashfield in Wolverhampton in 1939, but they do not appear to have had any children. He died in 1956 at the age of 60.