Sitting on Bill Winters’ bookshelf in the Mayfair office of Renshaw Bay, the alternative investment firm he set up after his shock exit from JP Morgan and the investment banking industry in 2009, is the PG Wodehouse novel Bill the Conqueror.

The book - which stands out among the usual array of biographies and mementos associated with a financier with strong political connections - was a gift from his son and tells the story of an American who leaves his wild ways in New York and moves to London, where he finds love in an unexpected place.