Once the interview was over (done live from an office in the House of Lords), I went down with a Peer to the PLP (Parliamentary Labour Party) Office in the Palace - where he to too signed the book. It was very moving to read the comments made by his colleagues.
I'm now back in the office watching the television coverage of events in Buckingham Palace, where Blair, the former Prime Minister, is due out shortly. Now he and Cherie are leaving. And so the hand of history steers a remarkable man into a new career.