Holding(s) in Company

Hiscox PLC
15 September 2005

Hiscox plc, (the 'Company') was notified on 13 September, that
following transactions on 9 September, Barclays PLC had an interest in
the issued share capital of the Company of 3.93%, as detailed
below:

Legal Entity Report
As at 9 September 2005 Barclays PLC, through the legal entities listed below,
had a notifiable interest in 11,584,077 ORD GBP0.05 representing 3.93% of the
issued share capital of 294,394,653 units.

Legal Entity                                     Holding       Percentage Held
Barclays Capital Securities Ltd                  696,968                 .2367
Barclays Global Investors Ltd                 10,432,104                3.5436
Barclays Life Assurance Co Ltd                   355,830                 .1209
Gerrard Ltd                                       85,858                 .0292
Barclays Global Investors, N.A.                   13,317                 .0045
                         Group Holding        11,584,077                3.9349

Registered Holders Report
As at 09 September 2005 Barclays PLC, through the registered holders listed
below, had a notifiable interest in 11,584,077 ORD GBP0.05 representing 3.93% of
the issued share capital of 294,394,653 units.

Registered Holder                                     Account          Holding
                                                  Designation
Barclays Capital Nominees Limited                                      696,968
Boiss Nominees Ltd                                    4224361          122,935
Chase Nominees Ltd                                      16376          160,789
Chase Nominees Ltd                                      20947        6,539,723
Chase Nominees Ltd                                      28270          111,321
Investors Bank and Trust Co.                                             7,532
Investors Bank and Trust Co.                                             5,785
JP Morgan (BGI Custody)                                 16331           93,124
JP Morgan (BGI Custody)                                 16341          151,385
JP Morgan (BGI Custody)                                 16400        3,397,282
JP Morgan (BGI Custody)                                 18409          211,375
R C Greig Nominees Limited                                RC1           68,658
R C Greig Nominees Limited a/c                            BL1            9,000
R C Greig Nominees Limited GP1                            GP1            8,200

                        Total                                       11,584,077

ENDS




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