Thank you for downloading from the BBC.

The details of our complete range of podcasts and our terms of use, go to BBCworldservice.com slash podcasts. A few weeks ago, someone let me have access to a confidential database for half an hour.

I wanted to see if it said anything about some friends of mine and I got a bit of a shock.

The first word which comes up is terrorism.

I'm now clicking on to the screen to see why.

Well, in red, which seems to indicate terrorism, is links to 21-7 London tube bombings.

Very well-known terrorists, Richard Reed the shoe bomber.

Nice scrolling.

And it's quite a little hair hair raising stuff, weapons training.

I'm Peter Oborne and this BBC World Service program

is my attempt to discover why the bank accounts

of several British Muslim charities and individuals were suddenly closed down by

HSBC last summer. It has taken me on a rather dramatic journey.

For a start on a rather dramatic journey.

For a start, it led me to resign my job as chief political commentator of London's Daily Telegraph.

The newspaper had failed to publish an article I'd written, critical of HSBC's

refusal to explain why it had closed these Muslim accounts without even offering any right of appeal.

As well as being one of the world's largest banks,

H.S.B.C. is, by the way, one of the telegraph's most important advertisers.

So Footloose and freelance I set out to discover for this program

the reason for H.S. B.C's actions.

It is not a decision taken by H.S. B.

...