Holding(s) in Company

3i Group PLC
04 December 2006

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES



1.         Name of company



            3i Group plc.



2.         Name of shareholders having a major interest



            Barclays PLC, through its legal entities listed in 14 below.



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




                 REGISTERED HOLDER                    ACCOUNT DESIGNATION            HOLDING AS

                                                                                 AT 28 NOVEMBER 2006
Bank of New York                                                                                    33,147
BNP Paribas                                                                                          4,012
Barclays Capital Nominees Limited                                                                  202,455
Barclays Capital Nominees Limited                                                                1,729,871
Barclays Global Investors Canada                                                                    35,282
BARCLAYS TRUST CO & OTHERS                                                                             397
Barclays Trust Co DMC69                                                                              7,246
Barclays Trust Co R69                                                                               15,667
Chase Nominees Ltd                                           16376                                 236,047
Chase Nominees Ltd                                           21359                                  40,554
Chase Nominees Ltd                                           28270                                 155,855
CIBC MELLON GLOBAL SECURITIES                                                                        3,164
Clydesdale Nominees HGB0125                               00069301301                                4,538
Clydesdale Nominees HGB0225                               00120146302                                  914
Clydesdale Nominees HGB0225                               00120147102                                  914
Durlacher Nominees Limited                                                                         556,804
Gerrard Nominees Limited                                    602698                                     258
Gerrard Nominees Limited                                    652198                                   4,778
Gerrard Nominees Limited                                    660968                                     230
Greig Middleton Nominees Limited (GM1)                                                              49,387
Investors Bank and Trust Co.                                                                     3,334,251
Investors Bank and Trust Co.                                                                     1,739,400
JP Morgan (BGI Custody)                                      16331                                 118,563
JP Morgan (BGI Custody)                                      16338                                  27,245
JP Morgan (BGI Custody)                                      16341                                 253,413
JP Morgan (BGI Custody)                                      16342                                  61,827
JP Morgan (BGI Custody)                                      16400                               3,366,408
JP Morgan (BGI Custody)                                      17011                                   7,986
JP Morgan (BGI Custody)                                      18409                                 433,464
JPMorgan Chase Bank                                                                                 80,736
JPMorgan Chase Bank                                                                                 15,250
JPMorgan Chase Bank                                                                                 43,663
JPMorgan Chase Bank                                                                                530,217
Mellon Trust of New England                                                                          4,255
Master Trust Bank                                                                                    4,566
Mellon Trust - US Custodian /                                                                       23,861
Mitsui Asset                                                                                         8,143
Northern Trust Bank - BGI SEPA                                                                      18,409
R C Greig Nominees Limited                                                                         507,874
R C Greig Nominees Limited GP1                                                                      45,824
R C Greig Nominees Limited SA1                                                                      32,213
R C Greig Nominees Limited SA1                             AAMCM32                                     651
R C Greig Nominees Limited a/c AK1                                                                 130,987
R C Greig Nominees Limited a/c BL1                                                                  16,992
R C Greig Nominees Limited a/c CM1                                                                  11,019
Reflex Nominees Limited                                                                              4,357
State Street Bank & Trust - WI                                                                      18,917
State Street Boston                                                                                228,055
State Street Trust of Canada                                                                         7,112
The Northern Trust Company - U                                                                       5,130
Trust & Custody Services Bank                                                                       13,706
Zeban Nominees Limited                                                                               3,583


Total                            14,179,597

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



            4 December 2006.



12.       Total holding following this notification



            14,179,597.



13.       Total percentage holding of issued class following this notification



            3.04%.



14.       Any additional information



            Legal entities through which Barclays PLC held its above interest as
at 28 November 2006 are listed below.


                   LEGAL ENTITY                                         HOLDING
Barclays Global Investors Australia Ltd                                                       80,736
Barclays Private Bank Ltd                                                                      3,583
Barclays Global Investors, N.A.                                                            3,695,563
Barclays Global Investors Japan Ltd                                                           70,078
Barclays Global Investors Ltd                                                              4,076,473
Barclays Global Investors Japan Trust & Banking                                              530,217
Barclays Bank Trust Company Ltd                                                               23,310
Gerrard Ltd                                                                                  800,213
Barclays Global Investors Canada Ltd                                                          35,282
Barclays Private Bank and Trust Ltd                                                            6,366
Barclays Global Fund Advisors                                                              1,739,400
Barclays Private Bank and Trust Ltd                                                            4,357
Barclays Capital Inc                                                                         202,455
Barclays Life Assurance Co Ltd                                                               624,889
Barclays Capital Securities Ltd                                                            2,286,675

                                         Total Holding    14,179,597



15.       Name of contact and telephone number for queries



            Ceris Stafford - 0207 975 3414.



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



            Robin Jack-Kee, Manager, Group Secretariat.





Date of Notification



4 December 2006


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