On the eve of Margaret Thatcher's re-election, a detail-filled and sometimes quite delicious session with the man who at that point was Britain's longest-serving peacetime prime minister in this century (a distinction he would eventually lose to Mrs. Thatcher), and who had just that morning retired as a member of Parliament. HW: "We are going through an extremely interesting time. I prefer two-party government, and I always thought that if I couldn't win with a working majority, I hoped the other side would be there with a working majority or Britain wouldn't be properly governed. I won four times, and twice only very narrowly." ... WFB: "Did you train Tony Benn with the others?" HW: "Yes, I brought him up. He was a very sensible boy in those days. I think once I used the phrase lightly, right off the cuff--I said, 'He immatures with age.' I think that has continued to be true."