Looks like you'll have to do your own legwork!
Here's a few pointers.
Try the aviation press archives for the period
The RAeS has an excellent library, and I believe if you contact them they'll be able to give you copies of contemprary reports
Your local library may / should have a newspaper archive - try around then.
Napier's had an archive - there may be an old boys network. See if you can track it down.
Where did he fly from? Try the airport. Again the old boys may have a resource...
The web's a wonderful thing, but sometimes you've still got to do your own graft. Hope this helps
Cheers
James K