Woolworths bolstered its board on Monday with the appointment of three new non-executive directors including David Mackay, the former president and CEO of US snack food giant Kellogg's.

But He is not the only new director with retail experience. Fellow appointee Christine Cross, retired from UK supermarket group Tescos in 2003 and runs her own retail advisory firm.

Michael Ullmer, who retired as deputy group CEO at NAB last year, is the third appointee. Ullmer has also been a director of NAB, Bank of New Zealand and chairman of the subsidiaries Great Western Bank (US) and JBWere. He is currently a director of Lend Lease.