What is the story about London that Baba told, which was later confirmed in the scriptures?

The source material from Chapter 18 does not mention any story told by Sai Baba that involves London. Instead, it describes a different, miraculous phenomenon. Baba would sometimes tell a short story to a devotee in the Masjid, and then instruct them to go to Sathe's Wada where Bapusaheb Jog was reading a holy book. As Chapter 18 recounts, the 'sincere listener' would go to the reading and find that the very same story would come up in the book, providing 'confirmation and full understanding of the previous story.' This was considered a great wonder, showing the divine connection between Baba's words and the sacred texts.