If you're a politician, you can see there might be times when, to secure the greater good, you have to take a backwards step. That is a matter of tactics.

Bath was dusty and a little shabby when we moved here. It did look its age and you felt its history in its streets and buildings and little alleyways. The sense of the past was palpable. There were some bad modern buildings but there was a patina of age.

People talk about Thatcherism all the time. I felt it was important to record the memories of those almost written out of history who upheld the spirit of '45.

There has been no more principled opposition to racism than Jeremy Corbyn: he was getting arrested for protesting against Apartheid when the rest of them were doing deals and calling Nelson Mandela a terrorist.