In some of the estates, there are generations of people who have been without work, so the environment and the example passed down generations is the normality of being without work.
From Brighton to Bradford, from Suffolk to Somerset, I have explored some remarkable buildings and structures that, in different ways, have helped to shed light on the way modern Britain has developed.
For 'Portillo's Hidden History of Britain,' I arranged to meet men and women who were witnesses to history - ordinary people who were caught up in extraordinary events.
The advantage of trains over planes is that there is much less hassle. You can get up from your seat and stroll about; you're more likely to meet people, and, particularly if you're making a long journey, you can actually see the terrain.
People are obviously very interested in travel, including travel in Britain.
'Bradshaw's' is a lovely device for the time-travelling television presenter. I just hope that people buying it aren't doing so with the intention of plotting a tour of 21st-century Europe. They'll find quite a lot has changed since 1913.
I don't know why, but I think the eating of food is hugely enhanced when you do it on a train. Even a simple steak and chips, when the world is rushing past outside, can take you to heaven.
People don't understand it, but the most intense occasions in the House of Commons were the ones I enjoyed most. When events could go either way and you could find yourself out of a job by the end of the day, those were the times when you were most on a high.
I don't think I've got a thick skin, but I've not felt particularly humiliated by the things which people think I would have felt humiliated by, such as losing my seat in 1997 and not being elected leader in 2001. In the second case, I felt relieved.
My father was possessed of an extraordinary romantic idealism, an unwavering belief in certain principles. He was always talking about the past. Always. Of course, it has a powerful effect on me.
My grandfather was a great advocate of Scottish art at a time when Scottish artists struggled to be taken seriously. They were not highly regarded, but he fought for them, befriended them, and championed them.
When you are being interviewed by Jeremy Paxman, you are the prisoner in the dock: assumed guilty unless proved innocent, under intense pressure, on the defensive. There are very few people who can look relaxed in that position.
Wagner had a terrific understanding of politics. In 1829, he was a Marxist revolutionary who wanted to bring down the establishment. He hated religion and churches, which he said enslaved people. But he later developed different views that put art at the centre of the life of the state.
I feel opera is an expression of artistic excellence. To do it is expensive, as there's a requirement for an orchestra, good voices, excellent sets, and the fact that productions generally have only short runs. But I believe it's something we ought to achieve as a nation.