This is the BBC.

I've just come from the cabinet, not standing outside on the street like I did year in year out,

but actually inside the cabinet, I've not swapped jobs.

I was there with a camera crew just for the beginning of the No Deal cabinet.

We've been invited inside number 10 for a film of that name, Inside Number 10 Deal or No Deal.

The cabinet, the Prime Minister, were on best behaviour when the cameras were on.

We were ushered out of the room as the door shut.

There was the sound of an enormous gaffer of laughter from the 30 odd people inside the cabinet room.

And the cabinet minister told me as he walked past me afterwards, he said typical of her.

She was very straight in front of you and as soon as you've gone, she cracked a great joke.

Was it a joke at my expense? Almost certainly.

It's been fascinating, Gidea glimps of life behind the scenes in Theresa May's No. 10.

I've filmed in the Commons office when her aides were watching her do Prime Minister's questions.

We now also see what we've been doing.

We've filmed in a meeting with the man who everybody thinks is in charge really.

The civil servant Olly Robbins, who has been drawing up that checker's plan.

Don't misunderstand, this isn't a film in which the cameras have been let roll and captured whatever happens.

This is carefully calibrated and controlled.

But of course there's always a compromise when you accept an access deal as a television documentary maker.

What we're trying to do is show you a little bit of what's it like in the Prime Minister's study.

What's it like in her Commons office?

What's it like when they have a meeting to discuss how to discuss with the EU?

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