I presume an old cathedral full of mysterious runes describing the apocalyse, as if it where written in the stars by ancient wizards. Any old building would be presumable, involving riddles and poetry describing the future,while the entire time, the building is threatening to fall down and enemies are on your tail.

Yes.

Ah, incest. Although I've read more stories with no major romance whatsoever, it does appear in some post-apocalyptic themed stories. In those types of stories, the destruction is more severe, and the plot is extremely graphic. I myself have written some type of it in one of my books.

 If you want a lot of dark humor, you should include plenty of victims if unfortunate events were to happen. Dark humor is often used by dark people, and considering it takes place in the past, I recommend dark clothing and suspicious characterictics. Taking place in London is a good oppurtunity for brawls and fights, as it is a large city. Gangs would be assumable here. Most of the British-located books I read are written with a British accent.

Oh, and if I am to read your book, I would like to see a car chase involving a double-decker London bus. :)

Goats would probably be common in apocalyptic times, assuming they still snack on paper and aluminum. They also eat poison ivy and poison oak, which could be helpful if at some point if you were to get stuck in an area full of unidentifiable plant matter. Their horns and agressiveness could also provide good protection from enemies. And yes, I have read an apocalyse story were the people ride goats.

I am understanding post-apocalypse stories are very common on here. I am personally a fan, for a post-apocalyse theme contains the things I enjoy in a book: Suspense, destruction, betrayal, survival, and death. I would like to toss around ideas for anyone that might try to write a storygame for post-apocalytic. Questions that are personal can be sent via private messages with me.

Oh, sorry about that.... I stopped.