I enjoy helping Bob, there isn't much that I can help with on the Forum but when I can I enjoy doing so. I may not know much but sometimes I know A person that can.

I have been in touch with Roy, he has sent me the Manchester's Medal Roll for the Palestine GSM page 19 (Attached I hope) it has both Hill and Johnson on it.
I have checked everyone on that page, most have Service Numbers quite close together. I cannot find any who were in Singapore which to me gives a very high probability that they were all time expired or returned to UK from Palestine/Egypt for some other reason.
I also checked CWGC and the Forum only one from that list came up 3525437 Pte John Thomas Hayward who was executed by the Germans at la paradise whilst with the 2nd Bn. (Information from a post by Roy on the Forum).
I belong to the FEPOW Family Group, none of the members could find anything to indicate that Hill served in Singapore this again tells me that there is a 99.9%* probability that he was not there.
The Pacific Star remains a mystery for now. Roy is going to look through his information to see if he has anything else on Hill.
Bob, can you see if you can correct Hill's Service number in the subject heading, I cannot see how to do it.
Take care
Cliff
PS: I forgot the attachment, hope it posts OK, I had to reduce the file size from 1.66Mb got it down to 221Kb using Photopad set to Percentage and reduced to 20%.