After London: or, Wild England

I read a series of essays about what Victorian science fiction books would have won the Hugo award, had it been handed out in those days.
This book was on of those mentioned.
It's SF only in that the first section discusses at great length what kinds of plants and animals would thrive in London many, many years after civilization had collapsed.
The rest of the book is a kind of dull Medieval adventure story.
So I can't recommend it.