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.
După ce compania a dat faliment după căderea bursei din 1929, Knox s-a reîntors la London, Ontario unde în următorii doi ani a lucrat ca reporter la The London Advertiser înainte de a se muta la Londra, Anglia unde, de-a lungul anilor 1930, a apărut în câteva filme.