Thanks for downloading analysis from the BBC.

I'm sure you've been as fascinated as we have by the biggest political issue of our times,

the vote to leave the European Union.

We think there's one set of really important and fascinating questions that have been largely ignored by the mainstream UK media.

Edward Sturtin went to investigate.

Once again, good afternoon everybody. You're all very, very welcome to Dowry.

London, dowry, a city of many names. My name is John McNulty. I work for Markham

Maccrossin City Tours. My pleasure to have you now for the next time,

hopefully tell you lots of interesting things about our city.

Whatever you call it, this city has a special status for people on both sides of Northern Ireland's sectarian divide.

It's more than 320 years since a Catholic king, James II, besieged its Protestant population,

but everyone knows the story.

The March in December, to celebrate the closing at this gate,

and the March in August to celebrate the relief of the city

when the ships arrived from London.

Now during the siege of 12th, it's a bit up to 7,000 people lost their lives.

Just the sort of material a good tour guide needs as we walk the magnificent city walls.

The peace process in Northern Ireland was designed to consign stories like that very

firmly to past history, the stuff of tourism, not politics, but the EU referendum has stirred some old ghosts in dairy because Northern Ireland voted to stay in,

while the United Kingdom as a whole voted to leave.

I don't think you can mess around with our settlement and of course people in Northern Ireland voted to remain within the European Union.

Northern Ireland does not want this. Frankly I'm never going to use my British passport again.

...