I believe I do have a timeline of events that you might find educational.
Patrick’s final choice for Desert Island Discs is By the Sleepy Lagoon, once again following his literal desert island theme.
He declines to choose a luxury to bring with him, but then surprises the host by choosing The Tale of Mrs. Tiggy-Winkle by Beatrix Potter as his book.
When asked why, he simply states that it is his favourite with no further elaboration. The host sighs and thanks him.