“Any member of the public might reasonably suspect that Cameron accepted the position on the condition that he was made a Lord. If this is what happened, it would be blatantly wrong. We are not asserting that the requested documents will definitively reveal such a quid pro quo, but at least they would provide the public with some explanation as to why David Cameron was made a Lord so long after his tenure as an MP ended. This is the essence of our concern regarding “timing”, which appears to have been misunderstood as simply the date and time of his ennoblement”