After the company folded following the stock market crash of 1929, Knox returned to London, Ontario where, for the next two years, he worked as a reporter for The London Advertiser before moving to London, England where, during the 1930s, he appeared in several films.
Efter at selskabet afvikling sig efter Wall Street-krakket i 1929, vendte Knox tilbage til London, Ontario, hvor han i de næste to år arbejdede som reporter for The London Advertiser, før han flyttede til London, England, hvor han medvirkede i flere film i 1930'erne.