Holding(s) in Company

Hiscox PLC
23 November 2004

                              Holdings in Company

Hiscox plc has been notified on 19 November 2004 by Fidelity International
Limited of the following:

Notifications under sections 198 to 202 - UK Companies Act

1. Company in which shares are held: Hiscox Plc

2. Notifiable interest: Ordinary shares

Fidelity International Limited (FIL)
PO Box HM 670
Hamilton HMCX, Bermuda

Parent holding company for various direct and indirect subsidiaries, including
Fidelity Investment Services Ltd. (FISL) and Fidelity Pension Management (FPM),
investment managers for various non-US investment companies and institutional
clients. (See Schedule A for listing of Registered Shareholders and their
holdings.)

3. The notifiable interests also comprise the notifiable interest of:

Mr. Edward C. Johnson 3d
82 Devonshire Street
Boston, MA 02109

A principal shareholder of Fidelity International Limited.

4. The notifiable interests include interest held on behalf of authorised unit
trust schemes in the UK, notwithstanding the exemption from reporting pursuant
to Section 209 (1) (h) of the Companies Act 1985.

5. These notifications of disclosable interests constitute separate
notifications of interest in the shares and are combined solely for the purposes
of clarity and efficiency. Nothing herein should be taken to indicate that
Fidelity International Limited and its direct and indirect subsidiaries or Mr.
Edward C. Johnson 3d act as a group or in concert in respect of the disclosed
interests, or that they are required to submit these notifications on a joint
basis.

6. The disclosable interests arise under section 208 (4) (b) of the Act, namely
where a person, not being the registered holder, is entitled to exercise a right
conferred by the holding of the shares or to control the exercise of such
rights, or under section 203 of the Act respectively.

Schedule A

Security: Hiscox Plc

Shares Held     Management Company      Nominee/Registered Name
1,200,200       FII                     Bank of New York Europe LDN Total
1,179,630       FII                     JP Morgan, Bournemouth Total
185,600         FIL                     State STR BK and TR Co LNDN (S Total
23,091,947      FISL                    JP Morgan, Bournemouth Total
99,300          FPM                     Bank of New York Brussels Total
383,800         FPM                     Citibank London Total
28,140,477                              Grand Total Ordinary Shares

Current ownership percentage: 9.05%

Shares in issue: 288,999,329

Change in holdings since last filing: +2,657,100 ordinary shares


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