The UK national archives search portal has one entry that may be of use:
Reference: BT 395/1/86768
Description: Medal listing of Scott, Arthur James
Discharge number: R280391
Date of Birth: 26 February 1924
The (currently) free downloadable PDF is a single page, obviously from a bigger list, which includes this Arthur James Scott:
The PDF is avaialable here:
https://discovery.nationalarchives.g...ils/r/D4364013
I don't know the precise meanings of the various abbreviations, but there appears to be evidence of Atlantic ('AT') and Pacific ('PA') medals there. The full PDF does not explain what the various columns represent, but I see what looks like a date ('Feb 47') and what seems to be 'NZ' under the number '60104'. Is this a service number? Was this Arthur J. Scott a New Zealander, or perhaps emigrated to New Zealand after discharge?
And here is a completely different theory ......
The linked BBC article includes this: "... one expert believed Arthur James Scott was from Brigg in Lincolnshire." Looking at the photo accompanying the article, I initially wondered if his surname is Brigg, not Scott? So, might we be looking for Arthur J. S. Brigg? Just a thought.