Good evening bbart and Andy J2022, thank you so much for your continued input, I have found his service record on Ancestry this evening after a dig around.
bbart, I have found the piece mentioned by yourself regarding the 5th of September and admit my heart skipped a little but as Andy J2022 said, I too think it was the date of the edition of the Gazette, it looks to read "To London Gazette" after the 5th of September, although it is in short hand type of writing.
I will try a search of the London Gazette to clarify, as a side note, he was actually awarded his MM by the Officer Commanding Mersey Defences, Liverpool in a private setting on the 10th of March 1920 at 15-30 hrs.
Best regards always.
Frank.