Have tried to book Business class ADL- LHR return with QFF awards.

Have tried to book Business class ADL- LHR return with QFF awards. Showing economy seats for all or part of the route but for the same number of points as business. Any suggestions for securing business award all the way?

I'd call the QFF award service desk, they'll probably charge you a fee (not sure what that would be) but at least you'd have the peace of mind knowing that you were actually getting a full business award (not business to Hong Kong, and economy on BA thereafter!).