Sidney Wilmer was in the renumbered 3rd/4th London Regiment having been in the Hunts Cyclists Battalion, as had Harry Attwood. The Londons landed in France in January 1917 and Sidney was reported as missing from 20th September, but later was found to have been killed. He was one of 4 brothers serving with the colours and the youngest son of Mrs E Wilmer of Needingworth. He was an apprentice at Johnson and Randalls, Grocers in St Ives.

Hunts Post 26th October 1917

Needingworth Cyclist Missing

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Pte S Wilmer, London Regiment is reported missing as from September 20th. He was formerly in the Hunts Cyclists, and went to France about a month before he was missed. He is one of four brothers serving with the colours, and is the youngest son of Mrs E Wilmer of Needingworth. As a civilian he was an apprentice at Messrs. Johnson & Randalls grocer, St. Ives.