Thank you all so much for the help and replies. Huge thanks also for looking up in books which has saved me lots of time and money.

Re looking at ADM 171/164, originally it was (still is) my intention to visit Kew.
On Friday I was pointed in this direction:
http://discovery.nationalarchives.gov.uk/details/r/C975134 and I searched through the pages here:
http://discovery.nationalarchives.gov.uk/details/r/C975134#imageViewerLinkI’m quite prepared to have to visit Kew but having never been before I wanted to ensure I started looking in the right place once I got there. I take it ADM 1 is the place to start?
Thanks for the comment re L Gazette having a poor search engine, that’s reassuring given the frustrations I had with it. Superb top tip and link to the Seedie’s roll of Naval Honours and Awards. The easiest to reach copies for me are in London, shame there isn’t one in Portsmouth. So a trip to London it is.
Again I can’t thank you all enough

, this info would have taken me many hours over many weeks to even get close to (if at all). It might be a few weeks before I can get to London but if and when I find out anything I’ll update here. The quest to confirm continues…