This is the BBC.

Hello, I'm Nick Robinson.

As we're taking a break over the summer,

here's a chance to listen again

to the excellent Radio 4 series,

The Long March of Corbyn's Labour.

In this week's episode,

George Parker, political editor at the Financial Times,

explores Labour's approach to the economy

and how far-reaching

its policies will be. I'm a Marxist. This is a classic crisis of the economy, a classic capitalist

crisis. I've been waiting for this for a generation. Recognise that voice?

Yes, that's John MacDonald, speaking in 2013,

explaining how the financial crisis had created the perfect storm,

a chance for labour to completely rewire the British economy and overhaul the way the country is run.

Two years later, he would become Shadow Chancellor.

The cry saying don't waste it, you know, let's use this to explain to people,

this system based on greed and profit does not work.

What we need is a system based upon planning for need and democratically controlled.

Now John Macdonnell and his old comrade Jeremy Corbyn have a chance to turn stump speeches in sweaty conference halls into a prospectus for running Britain.

Business is paying close attention,

and ordinary voters are asking the question,

...