Jonathan,
Further to what I said about Jonathan Moffat at the Malayan Volunteers, he has the written records of the Volunteers pre-war plus press cuttings and all sorts. If you ask him, he will send you what details he has on Gilmour, including photocopies of relevant articles and photographs if any.
From the information you have given me, your relative and his wife were civilian internees not POWs and would have been in Changi Prison and then Sime Road. The Fepow (Far Eastern Prisoners of War) Community deal with POWs. There are two excellent diaries of civilian internment in Changi; TPM Lewis's "Changi the Lost Years, a Malayan Diary, 1941-45" and Tom Kitching's "Life and Death in Changi". These diaries are very detailed and really bring the internment to life. They are both out of print, but it is possible to find them in certain libraries, such as the Cambridge University Library or the Imperial War Museum, it is worth checking around, and I have seen them for sale second hand on e-bay from time to time. If Gilmour's wife has a Changi number then it sounds as if she was interned then died. I e-mailed the museum asking for information on my grandfather and they replied with all his details including cell number at Changi and hut number at Sime Road.
If you need any more information do let me know, I spent six months researching this a couple of years ago,
Jenny
