Thanks very much for your help.
After exhaustive testing I finally went for the Transfer Backup Sets option with the following changes in Options:-
Verification Off (to speed things up).
Executions > Transfers > Copy Snapshot ticked but everything else un-ticked (Especially the Recycle Source Backup as I want the original backups to remain intact as they are recycled by their own scripts after 3 months).
Executions > Matching > Match source catalog file un-ticked.
With Scheduled Executions set as recycle.
Having now run this a few times “live” I am happy that it does exactly what I want it to do.
Once again, thanks for your help.
I trust this terminology is within your preciseness?