What does Sai Baba say about traveling to London or other foreign countries to spread his message?

The provided source material does not contain any reference to London or specific instructions from Sai Baba about traveling to foreign countries to spread his message. Instead, the text from Chapter 2 emphasizes the internal and local aspects of devotion. Baba instructs the author to keep a record of his stories and experiences, noting that this can be done 'at home or elsewhere.' The primary focus is on the creation of the book itself, which Baba states he will write through the author once the author's ego is dissolved. The purpose of these stories is to foster devotion and destroy ignorance in those who hear them.