For a lot of Tories, Boris Johnson is effectively the Conservative party leader-in-waiting.
But Boris is a keen student of political history and he looks back at other leaders-in-waiting, like Michael Heseltine for example, who did not seize the crown.
His speech today was quite carefully calibrated: He was funny; He made them laugh; He teased the Prime Minister; He was quite optimistic and buoyant amid all this economic gloom.
But he didn't stray away from his subject - he concentrated on London and he made sure it could not be seen as a direct leadership pitch.
I think it is in his interests to continue like that because if he does the party will be tempted to deploy him quite heavily in the next election.
More top news
The survey also showed that people would be willing to pat £5 to offset their carbon emissions.
Companies are being urged to allow mothers to come back to work under flexible working hours.
He says it has taken him several years to be happy with the album.