Hi,
A question about the war service record if you don't mind.
Have you actually acquired a full record or are you just going on the index entry which we can see on the National Archives site and WW2 nomnal roll?
The reason I ask is that I do not see the word "son" anywhere so am presuming you know something we don't.
If you have seen the full record, the address of that NOK should be shown.
Another point, if that person is named as NOK, it suggests that either Thomas was no longer married to Mary Josephine or she was dead.
If you have not got a full record, you can request one.
Sue