The 1/7th Middlesex were a Territorial Force Battalion who were mobilized in 1914 and moved to Sittingbourne before embarking for Gibraltar in September 1914.The battalion returned to England early in 1915 and were then mobilised and sent to France in Spring of 1915 where the Battalion continued to serve throughout the War, finally being demobilised in 1919.
See also 18.(90SIT) for the 8th Middlesex
Image and image title: Courtesy of the Sittingbourne Heritage Museum