Hello Pat and Barbara and welcome to Rootschat.
Edward was with 2/10 Battalion and looking at his medal index card, went to France and Flanders with the original draft in February 1917.
The Long Long Trail has a brief synopsis of their movements within 58th (2/1 London) Division here:
http://www.1914-1918.net/58div.htmI am assuming that you have his medal index card and the London Gazette entry. His service record does not appear to have survived (which is not unusual).
The next move, if you are interested in taking it further, would be to obtain the war diary. This is referenced under WO 95/3009, (175 Infantrey Brigade) at the National Archives. Fortunately it is available for download via Documents Online on the link below:
http://discovery.nationalarchives.gov.uk/SearchUI/Details/AssetMain?iaid=C4556160I don't have it myself, so can't look up the relevant dates. If you do go down this route, firstly make sure that you download all the files. I believe it comes in four parts. Secondly, I should be able to help you with the St Julien actions, as I have trench maps etc for the area. France 1918 is outside my scope, but there will be others here who can help.
Phil