I’ve just done a conversation in Hatchard’s with Dan Cruickshank and a small, but very knowledgeable audience who asked interesting questions. One of them was about the inhabitants of East London who are conspicuous by their absence from the book; the answer, which is only half true, is that I’ve never been good at photographing moving subjects (it’s an architectural book). A second was why Hoxton is so poorly represented; the answer is that I never set out to be topographically systematic in my coverage. Dagenham is missing as well. A third was what I think of Canary Wharf; the truth is that I am an admirer of Canary Wharf, which has been a very successful agent of regeneration and which, as readers of my blog will know, I admire architecturally. The only unanswerable question is what is happening at the Whitechapel Bell Foundry.