This is the other end of it, which would suggest it is, indeed, a private road.
Long bugger, though - doubt very much you'd be 'challenged' for being on it.
I know where i'm going on my next bike ride. Monday? Tennish? Anyone?
Thinking Trent Walk > Ingestre > Canalside (Great Haywood) > Tea and/or Scone > towpath > Stafford.
Join me?