David Cameron praised Boris this afternoon for his "dogged" lobbying as London Mayor.

The prime minister was trying to drum up support for a yes vote for elected mayors in the forthcoming elections.

Using the example of Crossrail, Cameron told his audience: "I had Boris on to me about protecting that investment relentlessly – in fact I’d say doggedly…

…and now those massive drilling machines are under London, creating thousands of jobs and laying the foundations for a stronger economy."

"But just think about that…

…in one of the biggest, most powerful cities on earth people know they can call out the man who runs it by his first name and make their voice heard.

That is real accountability, real democracy."

But it's not the only 'real' democracy that Cameron is keen on.

While Nick Clegg gets Westminster teeth grinding over House of Lords reform, and the government's plans to axe the Upper House, he is not alone in his support for change in the second chamber - with or without the electorate having a say.

One Conservative MP who recently met with the PM said that he was determined to see House of Lords reform in some form.

"It was the strongest signal to come out of the meeting," they said.

The other issue that Cameron spoke strongly on, they said, was gay marriage.

The MP commented that the PM was "almost evangelical" in his desire to change the law on same-sex marriage.

But there are some backbench MPs who will be as 'dogged' as Boris was over Crossrail when same-sex marriage gets going.

Just see what former PPS Stewart Jackson has to say on the issue in the latest TP (out now).