1919 can't do (!) but in the fifties a form E.190 was raised for the newly-joined officer and followed him around behind his back until he got his ticket when it was eventually forwarded to him - when some of the comments may have come as a bit of a shock. The 'form' was actually like a small exercise book but formally printed with set-piece places for each entry which which would be filled in in manuscript by the appropriate reporting officer. I would not think there was any copy held back in the Admiralty.
Civil Service Commissioners' exam results and then the AIB results were printed off and the candidate was sent a copy. Presumably in that case something went into the Admiralty archive for each term's entry; for 1919 could be in PRO in the ADM section. Fun reading at a later date to see how one's chums' marks for 'Officer-Like Qualities' stacked up against their eventual careers.