RNS Number:6184N
Chubb PLC
16 July 2003


                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES


1. Name of company

Chubb plc


2. Name of shareholder having a major interest

AXA Investment Managers UK Limited on behalf of AXA S.A. and its  group
companies


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

Beneficial = 29,350,434 shares

Non-Beneficial = 1,953,529 shares


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

HSBC Global Custody Nominee (UK) Limited =  15,502,621 shares
Smith & Williamson Nominees Limited = 23,535 shares
BNY (OCS) Nominees Limited = 42,432
Axa Sun Life plc = 13,319,315 shares
Chase Nominees Limited =  1,415,465 shares
Undesignated = 1,000,595 shares


5. Number of shares / amount of stock acquired

Not disclosed


6. Percentage of issued class

N/A


7. Number of shares / amount of stock disposed

Not disclosed


8. Percentage of issued class

N/A


9. Class of security

Ordinary shares of 36p


10. Date of transaction

Not disclosed


11. Date company informed

15 July 2003


12. Total holding following this notification

Beneficial = 29,350,434 shares

Non-Beneficial = 1,953,529 shares

Total = 31,303,963 shares


13. Total percentage holding of issued class following this notification

Beneficial = 3.54%

Non-Beneficial = 0.24%

Total = 3.78%


14. Any additional information

The notification is due to a decrease in the beneficial interest holding from
4.39% to 3.54%


15. Name of contact and telephone number for queries

A J Birchall - 020 7766 4827


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

A J Birchall, Assistant Company Secretary


Date of notification

16 July 2003


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