Thank you for the wonderful comment, and for taking the time to quote your favourites. When the story is longer and sort of plotty I find that my prose often becomes somewhat plainer, so it was great to see there were still turns of phrase that stood out for you.

"and yes, I do wonder if anyone in the late Victorian underworld tried it for real"
I for one am have no doubt that they did, which made writing this quite easy and fun. I'm not sure whether anything was ever distributed in any way (too risky and all that), but there's simply no way that some smut wasn't produced even if it was only for the author's own pleasure.:)