Holding(s) in Company

Morgan Sindall PLC
28 April 2008


TR1: NOTIFICATION OF MAJOR INTERESTS IN SHARES


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

2      Reason for the notification:           A 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                  974,902*
                                              Chase GA Group Nominees Limited                     2,670,830*
                                              Chase Nominees Limited                              215,153*
                                              CUIM Nominee Limited                                712,205*
                                              * denotes direct interest                                  

                                              Chase Nominees Limited                              147,383
                                              Vidacos Nominees Limited                            839,765


5      Date of the transaction and date on
       which the threshold is crossed or
       reached:                               25 April 2008

6      Date on which issuer notified:         28 April 2008

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

8      Notified details:

A:  Voting rights attached to shares

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

GB0008085614       5,581,718                               5,581,718


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

GB0008085614       4,573,090                  4,573,090    987,148      10.65%       2.30%


B:  Financial instruments

Resulting situation after the triggering transaction

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


Total (A+B)

Number of voting rights                       % of voting rights

5,560,238                                     12.95%


9      Chain of controlled undertakings       See section 4
       through 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 42,945,669.

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