Never heard of anything other than the place Offham.
I don't know a public school called am.
What quiz is it? Do you have the exact clue and details of the number of letters? Do theanswers have a theme?
Yes, the previous answer given was Nuneaton. It was given last night after you asked this yesterday.
http://www.theanswerb.../Question1036204.html
I'm not 100% convinced Nuneaton is right though