Holding(s) in Company

Hiscox PLC
01 September 2003



1 September 2003

                   Notification of interests in shares under

                     Section 198 of the Companies Act 1985



1. - Name of Company

Hiscox plc

2. - Name of Shareholder having a major interest

Notification is in respect of indirect interests

3. - Please state whether notification indicates that it is in respect of
holding of the Shareholder named in 2 above or in respect of a non-beneficial
interest or in the case of an individual holder if it is a holding of that
person's spouse or children under the age of 18

Notification is in respect of a non-beneficial interest held by AMVESCAP Plc
either directly or through its subsidiary companies

4. - Name of the registered holder(s) and, if more than one holder, the number
of shares held by each of them

Vidacos Nominees Ltd                                        26,116,851

HSBC Nominees Limited                                        2,439,395

Chase Nominees Limited                                       1,860,596

Bank of New York                                             1,318,033

Northern Trust Nominees Limited                                550,000

CM Investment Nominees Ltd                                      26,385

5. - Number of shares / amount of stock acquired

342,309

6. - Percentage of issued class

Less than 1%

7. - Number of shares / amount of stock disposed

N/A

8. - Percentage of issued Class

N/A

9. - Class of security

Ordinary Shares of 5p

10. - Date of Transaction

28 August 2003

11. - Date Company informed

29 August 2003

12. - Total holding following this notification

32,311,260

13. - Total percentage holding of issued class following this notification

11.11%

14. - Any additional information

The holding, the subject of this notification of interest, also includes a
notifiable interest in the holding of INVESCO Perpetual UK Growth Fund which now
holds 9,203,263 shares (3.16%) registered in the name of Vidacos Nominees Ltd.

15. - Name of contact and telephone number for queries

Stuart Bridges: 020 7448 6000

16. - Name and signature of authorised company official responsible for making
this notification

Stuart Bridges
Finance Director
Date of Notification: 1 September 2003




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