EXHIBIT 15 July 10, 1998 Orion Capital Corporation 9 Farm Springs Road Farmington, CT 06032 We have made a review, in accordance with standards established by the American Institute of Certified Public Accountants, of the unaudited interim financial information of Orion Capital Corporation and subsidiaries for the period ended March 31, 1998 and 1997, as indicated in our report dated April 30, 1998; because we did not perform an audit, we expressed no opinion on that information. We are aware that our report referred to above, which was included in your Quarterly Report on Form 10-Q for the quarter ended March 31, 1998 is being used in this Registration Statement on Form S-8. We are also aware that the aforementioned report, pursuant to Rule 436(c) under the Securities Act, is not considered a part of the Registration Statement prepared or certified by an accountant or a report prepared or certified by an accountant within the meaning of Sections 7 and 11 of that Act. Deloitte & Touche LLP Hartford, Connecticut