Holding(s) in Company

Morgan Sindall PLC
05 February 2008

TR1: NOTIFICATION OF MAJOR INTERESTS IN SHARES


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

2       Reason for the notification:               An acquisition of voting rights

3       Full name of person(s) subject to the
        notification obligation:
                                                   Aviva plc & its subsidiaries

4       Full name of shareholders(s):      

        Registered holder:

        BNY Norwich Union Nominees Limited                 939,214*

        Chase GA Group Nominees Limited                  2,560,306*

        Chase Nominees Limited                             233,558*

        CUIM Nominee Limited                               695,879*

        * denotes direct interest


        Chase Nominees Limited                             115,794

        CUIM Nominee Limited                                27,339

        Vidacos Nominees Limited                         1,009,628


5       Date of the transaction and date on which
        the threshold is crossed or reached:
                                                   4 February 2008

6       Date on which issuer notified:             5 February 2008

7       Threshold(s) that is/are crossed or        12% to 13% change at combined interest level
        reached:

8       Notified details:


A:  Voting rights attached to shares


Class/type of shares Situation previous to the triggering transaction
If possible using
the ISIN code
                     Number of shares                             Number of voting rights


GB0008085614         5,563,848                                    5,563,848
Class/type of shares Resulting situation after the triggering transaction
If possible using
the ISIN code
                     Number of shares              Number of voting rights       % of voting rights
                     Direct                        Direct         Indirect       Direct         Indirect


GB0008085614         4,428,957                     4,428,957      1,152,761      10.35%         2.69%
B:  Financial instruments


Resulting situation after the triggering transaction


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


Total (A+B)


Number of voting rights                            % of voting rights


5,581,718                                          13.04%


9       Chain of controlled undertakings through   See section 4
        which the voting rights and/or the
        financial instruments are effectively
        held, if applicable:



Proxy Voting:

10      Name of the proxy holder:                  See section 4

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:                    Figures are based on a total number of voting rights of 42,801,848

14      Contact for further information:           Mary Nettleship, Company Secretary

15      Contact telephone number:                  020 7307 9218



Annex to Notification of Major Interests in Shares

A:  Identity of the person or legal entity subject to the notification obligation


Full name (including legal form for legal          Aviva plc and its subsidiaries
entities)
Contact address (registered office for legal
entities)
Phone number                                       01603 684420
Other useful information (at least legal           Neil Whittaker
representative for legal persons)
B:  Identity of the notifier, if applicable


Full name                                          Global Reporting Unit, Aviva Plc
Contact address
Phone number
Other useful information (eg functional
relationship with the person or legal entity
subject to the notification obligation)




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