Holding(s) in Company

Centrica PLC
                  

Centrica plc received on 31 May 2006 a notification dated 26 May 2006, stating
that on 25 May 2006 the interest of Barclays PLC in Centrica plc constituted a
notifiable interest for the purposes of section 198 of the Companies Act 1985.

SCHEDULE 10

NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Name of company

Centrica plc

2. Name of shareholder(s) having a major interest

Barclays PLC

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
Not known

4. Name of the registered holder(s) and, if more than one holder, the number of
shares held by each of them
Barclays Private Bank Limited                                           2,330,349
Barclays Global Investors Japan Trust & Banking                         4,214,337
Barclays Global Investors, N.A.
Barclays Capital Inc                                                   40,759,290
Barclays Global Investors Japan Ltd                                       194,130
Barclays Global Investors Ltd                                           1,610,510
Barclays Private Bank and Trust  Ltd                                   52,377,987
Barclays Life Assurance Co Ltd                                             18,935
Barclays Global Fund Advisors                                           6,145,232
Barclays Private Bank and Trust Ltd                                    11,549,122
Barclays Capital Securities Ltd                                           545,503
Barclays Global Investors Canada Ltd                                    6,147,535
Gerrard Limited                                                           234,602
Barclays Bank Trust Company Ltd                                        17,900,789
Barclays Global Investors Australia Ltd                                   104,407
                                                                        1,356,598

5. Number of shares / amount of stock acquired

Not known

6. Percentage of issued class

Not known

7. Number of shares / amount of stock disposed

NA

8. Percentage of issued class

NA

9. Class of security

Ordinary 6 14/81 pence

10. Date of transaction

Not known

11. Date company informed

31 May 2006

12. Total holding following this notification

145,489,326

13. Total percentage holding of issued class following this notification

4.01

14. Any additional information

None

15. Name of contact and telephone number for queries

Robin Healy  01753 494 017

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

Date of notification

31 May 2006