Welldone Chris, I know I should have looked harder !
Sadly it suggests that maybe Thomas was perhaps a casualty of the War ?.

There are 162 T Morris's listed on the CWGC site, many of them Thomas's, I looked at abot 15 of the entries without luck, if anyone cares to search them all some of them contain details of next of kin etc. Sadly it won't allow us to enter "Thomas", just "T" ...

http://www.cwgc.org/debt_of_honour.asp?menuid=14