Hi Peter,
I too am in Australia and know that obtaining records from the UK can be an expensive process! Fortunately there are many online resources including forums such as this one.
Anwyay, you can access 111 Sqn’s complete ORB for the period 1939 to 1940 at the following fantastic link -
http://www.oldrafrecords.com/index.php
You should find some flight details for Harry.
As you may know, Hardman was born in Australia to English parents and was with 111 Sqn from Sept 38 to Mar 39, Jul 40 to Sept 40 and Nov 40 to Jan 41. Possibly claimed a Do 17 damaged on 13 Aug 40 (maybe shared and/or a probable). He transferred to the A&SD Branch in 1944, however, I am uncertain of his interim postings between 41 and 44.
Regards, Drew