Holding(s) in Company

Morgan Sindall PLC
09 May 2007


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 or disposal of voting rights

3        Full name of person(s) subject to the         JPMorgan Chase & Co
         notification obligation:

4        Full name of shareholders(s):                 J.P. Morgan Investment Management Inc.
                                                       JF Asset Management Limited
                                                       JPMorgan Asset Management (Japan) Limited
                                                       JPMorgan Asset Management (UK) Limited

5        Date of the transaction and date on which the 4 May 2007
         threshold is crossed or reached:

6        Date on which issuer notified:                8 May 2007

7        Threshold(s) that is/are crossed or reached:  5%

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           2,574,427                                       2,574,427


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          Indirect        Direct                 Indirect

GB000805614            Below 5%                                        Below 5%                               Below 5%


B:  Financial instruments

Resulting situation after the triggering transaction

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


Total (A+B)

Number of voting rights                                % of voting rights

Below 5%                                               Below 5%


9        Chain of controlled undertakings through      Total disclosable holding for JPMorgan Chase & Co: Below 5%
         which the voting rights and/or the financial
         instruments are effectively held, if
         applicable:
                                                       Holdings by controlled undertakings of JPMorgan Chase & Co are as
                                                       follows:

                                                       J.P. Morgan Investment Management Inc.
                                                       JF Asset Management Ltd
                                                       JPMorgan Asset Management (Japan) Limited
                                                       JPMorgan Asset Management (UK) Limited: Below 5%

Proxy Voting:

10       Name of the proxy holder:

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:                       Please note that the JPMorgan Chase group has other holdings     
                                                       which are covered by exemptions

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)    Ricky Crump

Contact address (registered office for legal entities)

Phone number                                           020 7777 0424

Other useful information (at least legal
representative for legal persons)


B:  Identity of the notifier, if applicable

Full name                                              Ricky Crump

Contact address

Phone number                                           020 7777 0424


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