EXHIBIT 21.1 SUBSIDIARIES OF THE ISSUER AND BERMUDA HOLDINGS Jurisdiction of Name Incorporation % Owned - - ---------------------------------------------------- ----------------- -------- Terra Nova (Bermuda) Holdings Ltd. Bermuda 100% Terra Nova (Bermuda) Insurance Co. Bermuda 100% TN Investments Ltd. Bermuda 100% Terra Nova Underwriting Agency Ltd. Bermuda 100% Terra Nova Insurance (UK) Holdings plc England and Wales 100% Terra Nova Asset Management Limited England and Wales 100% Octavian Syndicate Management Limited England and Wales 100% Octavian Computer Services Limited England and Wales 100% Octavian Leasing Limited England and Wales 100% Terra Nova Capital Limited England and Wales 100% Terra Nova Insurance Company Limited England and Wales 100% Terra Nova S.A.S. France 100% Compagnie de Reassurance d'Ile de France France 100% Terra Nova Pension Trustee Limited England and Wales 100%