Complex sentence: Much of the report was secretive, the Freedom of Information Act now in place would have gone some way towards preventing the clandestine cover-up of information which if in the public hands would reveal incompetence in government.
Split into simpler sentences: Much of the report was secretive, the Freedom of Information Act now in place would have gone some way towards preventing the clandestine sections. Information which if in the public hands, it was speculated would reveal incompetence in government.