Holding(s) in Company

3i Group PLC
19 April 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:


An acquisition or disposal of voting rights.


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):

See additional information under 13.


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

17 April 2007


6. Date on which issuer notified:

19 April 2007


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

4%


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
GB00B16PV024   18,484,412       18,484,412        18,254,412    18,254,412                    3.95%





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
                              
18,254,412                   3.95%




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:



                                     Registered Holder                      Holding         %
Prudential plc                                                              18,254,412      3.95   Total Notifiable
                                                                                                      Interest
                                     JP MORGAN NOMINEES                         62,184
                                     PRUCLT HSBC GIS NOM(UK) PAC AC         18,046,857
                                     PRUCLT HSBC GIS NOM(UK) PPL AC            145,371

The Prudential Assurance Company                                            18,192,228      3.94
Limited                              PRUCLT HSBC GIS NOM(UK) PAC AC         18,046,857
                                     PRUCLT HSBC GIS NOM(UK) PPL AC            145,371

Percentage holdings are calculated using an issued share capital of 461,106,007 ORD GBP0.62784
shares



14. Contact name:     Ceris Stafford



15. Contact telephone number:         020 7975 3414




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