Holding(s) in Company

Morgan Sindall PLC
24 January 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                       696,279*

                                                       * denotes direct interest


                                                     Chase Nominees Limited                     115,794

                                                     CUIM Nominee Limited                        27,339

                                                     Vidacos Nominees Limited                   980,439

                                                     Delta Lloyd Institutionale Sustainable 
                                                     Futures Fund                               11,319

5       Date of the transaction and date on which
        the threshold is crossed or reached:
                                                     23 January 2008
6       Date on which issuer notified:               24 January 2008
7       Threshold(s) that is/are crossed or reached: 12% to 13% 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          5,391,780                                     5,391,780
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          4,429,357                      4,429,357      1,134,891      10.35%         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


5,564,248                                            13.00%


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    

HOLEASFLADNPEFE