Bicentenary of the Abolition of the Slave Trade

I compliment the right hon. Gentleman on an entertaining and informative speech. I am learning a lot just from listening to it—[Interruption.] One might say that that does not often happen in this place. Does he accept that it is a mark of the success of those brave individuals, such as Sir William Roscoe in Liverpool, and of their dedication to the campaign—and the words that the right hon. Gentleman has just quoted from an early speech on the subject—that they brought about such a huge change in the culture in the UK that our towns and cities now have memorials to those great people because of the work that they did on slavery?