Hello, Thanks you for the compliment, and of course, I would not mind having this picture included in your book.
I assume that the picture indeed must have been taken near Beaulieu river, given the name 'HMS Hawke' on the life buoy. I have read that there were actually two HDMLs assigned to HMS Hawke, but I can't find the source anymore.
The picture is actually a very low-res version of a scan which is 9MB in size, so I can't upload the original version. If you send me a PM with your mail-address I can send you the original size for this picture.
I found another picture, taken when my father in law was promoted to sub-lieutenant. That must have been taken late 1946 and probably at the front door of HMS Hawke. The picture is included as an attachment to this post. My father in law is standing second left. I have no clue who any of the other officers are in this picture and I assume that the Commander was their mentor. HMS Hawke had a captain as commanding officer. (If you want to know which staff was working in HMS Hawke, the National Archives have copies of the 'Navy List' and these books give information about all the commissioned officers for each ship, whereby ship can also be a stone frigate).