Can you explain the reference to a devotee from London in Baba's story and what book he was asked to read?

The provided text does not contain any reference to a devotee from London or any instructions for them. According to Chapter 18, Sai Baba guided his local devotees in Shirdi. He assigned Bapusaheb Jog the task of daily reading sacred Hindu texts like the Jnaneshwari and the Nath Bhagawat in Sathe’s Wada for the benefit of other devotees. The chapter emphasizes Baba's focus on these specific Indian scriptures and does not mention any foreign visitors or alternative religious books being read at his instruction.