AFFILIATED COMPANIES
MILL SHARES HOLDINGS (BERMUDA) LTD.
ONEBEACON HOLDINGS (GIBRALTAR) LIMITED
WM BELVAUX (LUXEMBOURG) S.A.R.L.
ONEBEACON INVESTMENT (LUXEMBOURG) S.A.R.L.
WM FINDEL (LUXEMBOURG) S.A. R.L.
WM KEHLEN (LUXEMBOURG) S.A.R.L.
WM QUEENSWAY (GIBRALTAR) LIMITED
ONEBEACON INSURANCE GROUP LLC
ONEBEACON U.S. ENTERPRISES HOLDINGS, INC.
ONEBEACON U.S. FINANCIAL SERVICES, INC.
ONEBEACON U.S. HOLDINGS, INC.
ATLANTIC SPECIALTY INSURANCE COMPANY
HOMELAND INSURANCE COMPANY OF DELAWARE
HOMELAND INSURANCE COMPANY OF NEW YORK
ONEBEACON SELECT INSURANCE COMPANY
OBI NATIONAL INSURANCE COMPANY
ONEBEACON SPECIALTY INSURANCE COMPANY
A.W.G. DEWAR, INC.
EBI CLAIMS SERVICES, LLC
NATIONAL MARINE UNDERWRITERS, INC.
ONEBEACON ENTERTAINMENT, LLC
ONEBEACON PROFESSIONAL INSURANCE, INC.
ONEBEACON SERVICES, LLC
ONEBEACON SPORTS AND LEISURE, LLC
SPLIT ROCK INSURANCE, LTD.
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