Where's Isaac, dammit?

(I've been quiet for a little while because I had a lot of stuff to do and the amount of time I had to do it in refused to expand. I still have a lot of stuff to do, time still won't bow to my whim, and I'd rather be writing books. So... I'll probably continue being scarce for a little longer) This post is here to be something I can point people to when they ask the question in the title.

Hypothetical Reader: "The series is called Isaac's Story: London. But I've read some of it now and nobo...