Thanks for the note and suggestion @deherman-MSFT , however that doesn't seem to work either I'm afraid.
Below are two selected lines from the log file. The first shows the command and the second shows a file (I've masked the name of the file with xxx) from the excluded directory being transfered.
2021/10/29 21:28:26 Job-Command sync Y:\Documents\Organisational Change https://ocazurenas.blob.core.windows.net/ocazurenas/Organisational%20Change --exclude-path=Culture@Recently-Snapshot;Culture\Books@Recently-Snapshot
2021/10/29 21:28:26 INFO: [P#0-T#16] Starting transfer: Source "%5C%5C?\\Y:\\Documents\\Organisational Change\\Culture\\@Recently-Snapshot\\GMT+10_2021-10-14_0100\\Books\\xxxxxx.pdf" Destination "https://ocazurenas.blob.core.windows.net/ocazurenas/Organisational%20Change/Culture/@Recently-Snapshot/GMT+10_2021-10-14_0100/Books/x%x%20x%20x%20x%20-%20x%20x%20x%2C%20x%2C%20x%20x.pdf". Specified chunk size 8388608
Your thoughts?
Cheers