llanfairpg,
suggest you need to get a bit more specific with your request as it is a bit 'wide' for effective response. While other posters likely have knowlege of RAF Lichfield/Fradley they don't know what you know or what books you reference.
Is there a particluar period or activity/unit that you are seeking info about? Did you live/serve there at one time and are trying to fill in memory blanks? Are you writing a book? If so what is it to be about? Are you seeking maps? Photos?
Hope that helps.
Cheers,
Evileyes