Holding(s) in Company

3i Group PLC
06 December 2006

                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Name of company

3i Group plc

2. Name of shareholders having a major interest

Credit Suisse Securities (Europe) Limited, Credit Suisse International and Credit Suisse Investment
Banking (Cayman Branch) (together the 'Credit Suisse 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

In respect of those named in 2 above

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

Holder of Interest                                                              Shares held on 29 November
                                                                                           2006
Credit Suisse Securities (Europe) Limited ('CSSEL')                                               4,807,694
Credit Suisse International ('CSi')                                                              19,139,853
Credit Suisse Investment Banking (Cayman Branch) ('CSIB')                                         1,737,446
Total Interest held by the Credit Suisse Companies                                               25,684,993

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

not known

8. Percentage of issued class

not known

9. Class of security

Ordinary Shares of 62 69/88p each

10. Date of transaction

not known

11. Date company informed

1 December 2006

12. Total holding following this notification

25,684,993

13. Total percentage holding of issued class following this notification

5.50%

14. Any additional information

The above interest of CSSEL in 4,807,694 shares includes an interest of 1,270,500 shares under section 208
(5) of the Companies Act 1985 ('the Act') by virtue of the right to redelivery of equivalent securities
under stock lending arrangements.

Those Credit Suisse Group companies which are direct or indirect holding companies of CSSEL, CSi and CSIB
are, under the terms of section 203 of the Act, each interested by attribution in any shares in which
CSSEL, CSi and CSIB are interested.

15. Name of contact and telephone number for queries

Sofia Bernsand - 020 7975 3228

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

Robin Jack-Kee

Date of notification

6 December 2006


                      This information is provided by RNS
            The company news service from the London Stock Exchange