Holding(s) in Company

Morgan Sindall PLC
01 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 disposal 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                991,758


5       Date of the transaction and date on which
        the threshold is crossed or reached:         30 January 2008

6       Date on which issuer notified:               1 February 2008

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

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          5,564,248                                     5,564,248

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      1,134,891      10.34%         2.65%


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

5,563,848                                            12.99%


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 entities)  Aviva plc and its subsidiaries
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