In 2002 he married Penne Percy Korth, a Washington, D.C. society figure and former United States Ambassador to Mauritius. Midway through 2002 Peacock joined Boeing Australia Holdings as President of Boeing Australia. He retired from Boeing in 2007, and joined Gold Coast-based fund manager MFS Ltd as chairman. He held the position for 15 months, resigning shortly before the firm collapsed with debts of $2.5 billion. He later stated: "I should have looked more carefully at MFS before going into it. The business wasn't going well, and I thought I could turn it around but I couldn't.".