Watch Chris Ship's interview with Jeremy Corbyn in full above
Jeremy Corbyn's office is too big.
It's the one Ed Miliband used and it offers its occupant stunning views across the River Thames.
But the new Labour leader says he's not a fan.With a desk in one corner, a collection of green soft seats in the other and a large table in the middle - it doesn't suit the new Labour leader.
Instead, it'll become a meeting room and Mr Corbyn plans to move to something smaller along the corridor.
We met in his soon-to-be ex-office today - twelve days after his election - and he seems in a relaxed mood.
Not overly troubled by what many have concluded was a shaky start: a Shadow Cabinet reshuffle rushed out in the small hours of the night, a first meeting with a disgruntled bunch of Labour MPs, an outcry over the appointment as Shadow Chancellor of his friend John McDonnell and not one - but several - public disagreements with his top team over the direction of Labour policy.
"It's adult politics", he says when I ask him about his Shadow Cabinet differences, adding: "It's obvious there are people in there with different views, different traditions, different take on lots of things. Is that a weakness or a strength? I say it's absolute strength."
"People are fed up with...dictatorship politics", he says passionately. "We're not doing that."
But what if they can't agree? What if the "discussions" about which he talks don't resolve those differences?
There was a hint from Mr Corbyn that those with opposing views might have to be sacked.
"Where we can't come to agreements, either we would have to agree to differ or there would have to be some other solution to it."
So like a departure?
"Let's be optimistic about it", he tells me, refusing to spell out what his "other solution" might be.
He has, however, stamped his authority on one issue with which he disagreed with his Shadow Work and Pensions Secretary: the benefits cap.
The government wants to reduce to £20,000 the total amount a household can claim each year (£23,000 in London).
Jeremy Corbyn wants no upper limit.
He says the benefit cap has led to social cleansing -something he has witnessed in his own inner London constituency.
So, I ask, households should be able to claim £30,000 or£35,000?
"You can't put a figure on it. In the past there was no cap on it...the amount of money saved in the overall budget from thehousehold benefit cap is actually quite small."
He has a different solution: "My view is the government should introduce rent regulation."
So no limit, then?
"Until we get rent regulation, this is the consequence we are going to pay."
These are points the new Labour leader is planning to make during his first conference speech in Brighton next week.
His speech to the TUC last week - at the same conference centre - was delivered mostly from notes.
Expect a change of approach next week.
"It's an interesting challenge. I've tried it out. It's interesting."
I ask: "You've been having training then?"
"Training no, it's just me trying it out actually to see how I liked it."
If he does opt for a teleprompter, what will happen to that honest, see-what-you-get, non-politician politician, you might ask?
Before our conversation ends, I ask what this party leader has made of the media treatment this week of another party leader.
And on this subject - often referred to on social media as #piggate - he comes to his opponent's aid.
"The media treatment of any politician on unsubstantiated allegations, be it David Cameron, me or anybody else is wrong."
He said he would do things differently - but I doubt even Jeremy Corbyn thought that he would be sticking up for the Prime Minister over his treatment in some sections of the press.