I believe the Commonwealth War Graves people should be able to help. I think they have a list of medals earned. I know I turned my two grandfathers info up but years ago.
https://discovery.nationalarchives.gov.uk/ has a couple of records for Clifton Shaw, official number J 16231 Date of birth 22 May 1896, place of birth Sheffield.
One includes names of ships served 1939-1941.
The other, 1914-1926.
Both are also at Ancestry.com
There are some other Discovery records for this name, probably namesakes.