Holding(s) in Company

3i Group PLC
05 February 2007


NOTIFICATION OF MAJOR INTERESTS IN SHARES


On 2 February 2007 3i Group plc ('the Issuer') was notified of the following
details relating to a major interest in its 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:



Declaration of Major Shareholding as per FSA Transitional Provision 7



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



BlackRock, Inc



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





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



N/A



6. Date on which issuer notified:



2 February 2007



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



Above 5%



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 N/A              N/A              N/A           N/A            25,516,580     N/A           5.54%





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.



Total (A+B)

Number of voting rights      % of voting rights


         25,516,580                     5.54%




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



BlackRock Investment Management (UK) Limited - 25,516,580 (5.54%)



Proxy Voting:



10. Name of the proxy holder:

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

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



13. Additional information:


Issuer contact details:

Ceris Stafford, Group Secretariat

Telephone: [phone]




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