Exhibit 23.1
December 5, 2008
The Board of Directors and Shareholders
Argo Group International Holdings, Ltd.
Dear Sirs
Consent of Independent Registered Public Accounting Firm
We have issued our report dated 10 March 2008 accompanying the consolidated financial statements of Heritage Underwriting Agency plc for the year ended 31 December 2007, included in Argo Group International Holdings, Ltd.’s Form 8-K/A filed with the Securities and Exchange Commission (the “Commission”) on December 5, 2008. We hereby consent to the incorporation by reference of said report in the currently effective Registration Statements of Argo Group International Holdings, Ltd. on Forms S-3 and on Forms S-8.
| /s/ Littlejohn |
| Littlejohn |
| Chartered Accountants and |
| Registered Auditors |