When Margaret Thatcher was leader, she and Michael Heseltine were hardly soulmates, but she would not have allowed personal rivalry to take the heat off the Labour Party, whose own deep internal divisions are buried in other news now, nor would she have countenanced any attempt to have a show trial.
Lobbying has become a term of reproach, as if it were improper to push for a particular belief. This has happened because of paid lobbyists whose opinions are for hire and the fear that decision-makers, whether politicians or officials, are susceptible to their charms and wiles. This has tarred entirely proper lobbying with the same brush.
Eschatological fears are an ancient human concern. The Romans expected the world to end in 634 B.C. owing to a prophecy involving twelve eagles, while the early Christians anticipated the Final Judgment in their own lifetimes. Pope Sylvester II thought A.D. 1000 would be the last year, a view updated for the modern age by the Millennium bug.
Governments want to control information. To do this, they have elaborate systems for promoting themselves via propaganda departments and for ensuring confidentiality with official-secrets laws. There are good reasons for these: people need information, and national security deserves secrecy.