Spies from Liverpool?

I wanted to blog again about William Boyd's spy thriller Gabriel's Moon. I finished it a little while ago, but there's one funny piece of tidbit which caught my attention. Near the end of the novel, main character Gabriel Dax comes across a woman from Liverpool, who is almost immediately hostile to him. There is not much more to say about her, she may or may not be a spy for the Eastern Block and plays some role in the plot, then pretty much disappears from it. I suspect she will reappear in future novels, as this is meant to be the first title of a trilogy. Anyway, I find it interesting as I lived about a year in Liverpool. I don't think the city qualifies as a city of espionage just yet (so I won't mention it in my blog series on the matter), however it's not the first time I have seen Liverpool mentioned in a spy novel. I might tell you more in another post.