Holding(s) in Company

3i Group PLC
22 October 2007


TR-1:               NOTIFICATION OF MAJOR INTERESTS IN SHARES


1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached:

3i Group plc


2. Reason for the notification:

A purchase of shares has caused subsidiaries of Prudential plc to cross 3%
triggering this notification.


3. Full name of person(s) subject to the notification obligation:

Prudential plc group of companies


4. Full name of shareholder(s) (if different from 3):

Prudential plc


5. Date of the transaction (and date on which the threshold is crossed or
reached if different):

17 October 2007


6. Date on which issuer notified:

19 October 2007



7. Threshold(s) that is/are crossed or reached:

3%


8. Notified details:

A: Voting rights attached to shares
Class/type   Situation previous to the         Resulting situation after the triggering transaction
of shares    triggering transaction
 if possible Number of Shares Number of Voting Number of     Number of voting rights       % of voting rights
using the                     Rights           shares
ISIN CODE
                                               Direct        Direct         Indirect       Direct        Indirect

GB00B1YW4409 11,687,546       11,687,546       11,725,266    11,725,266                    3.02%



B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial   Expiration date   Exercise/          Number of voting      % of voting rights
instrument                            Conversion  Period rights that may be
                                      / Date             acquired if the
                                                         instrument is
                                                         exercised/ converted.

     N/A            N/A                      N/A         N/A                   N/A



Total (A+B)

Number of voting rights      % of voting rights

         11,725,266                     3.02%





9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable:



Prudential plc (parent Company)

The Prudential Assurance Company Limited (wholly owned subsidiary of Prudential
plc)



Proxy Voting:



10. Name of the proxy holder: N/A

11. Number of voting rights proxy holder will cease to hold: N/A

12. Date on which proxy holder will cease to hold voting rights: N/A



13. Additional information:



The Prudential Assurance Company Limited (a wholly owned subsidiary of
Prudential plc) has reached a 3% notifiable interest triggering this
notification.



Percentage holdings as at 17 October 2007 calculated using an issued share
capital of 387,988,093 ORD GBP0.738636 shares.


                                        Registered Holder                             Holding            %
Prudential plc                                                                     11,725,266         3.02 Total 
Notifiable
                                                                                                           Interest
                                        JP MORGAN NOMINEES                             74,783
                                        PRUCLT HSBC GIS NOM(UK) PAC AC             11,478,653
                                        PRUCLT HSBC GIS NOM(UK) PPL AC                171,830

The Prudential Assurance Company                                                   11,650,483         3.00
Limited
                                        PRUCLT HSBC GIS NOM(UK) PAC AC             11,478,653
                                        PRUCLT HSBC GIS NOM(UK) PPL AC                171,830





14. Contact name:     Sofia Bernsand

15. Contact telephone number:         020 7975 3228



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