The Tabernacle Messenger wrote about a Hugh Cameron:

1914: Enlisted in the Seaford Highlanders

1916: Has been promoted to Sub-Lieutenant

1918: Reported that he had been killed in action in Palestine.

The CWGC database lists  a Lieutenant Hugh Alexander Cameron killed in November 1917 in Palestine, buried in Ramleh War Cemetery. This would seem like the man referred to in the Tabernacle Messegner, but he served in the Hampshire Regiment. He is listed as British, but his parents address is in Australia.

Thanks to New City Primary School in Plaistow for filling in the rest of the story (February 2016): “We are New City Primary School and our research began when we had our WW1 memorial refurbished. The pupil’s name was Hugh Alexander Cameron. He once lived in Lichfield road East Ham, and prior to that Inniskilling Road in Plaistow. His parents were James and Agnes Cameron who were both born in Scotland. They emigrated to Australia where Hugh and his brother James were born, but returned to the UK sometime between 1894 and 1901.  Hugh attended our school. His parents returned to Australia sometime after 1911. Hugh was born in 1894 before their return to England. He died on 21st November 1917 aged 23 in Palestine and is buried in the Ramleh War Cemetery there.”