Holding(s) in Company

Morgan Sindall PLC
17 May 2006



Morgan Sindall plc
17 May 2006


Notification of major Interests in Shares



1.         Name of listed company:

           Morgan Sindall plc



2.         Name of shareholder having a major interest:

           Barclays PLC



3.         Please state whether notification indicates that it is regarding the
holding of the shareholder named in 2 above or in respect of a non-beneficial
interest:

           As in paragraph 2 above



4.         Names of registered holders and number of shares held by each:


           Name

Number of shares

            Barclays Capital Nominees Limited        111,874

            BNP Paribas                                3,353

Boiss Nominees Ltd                                    19,127

Chase Nominees Ltd                                 1,668,992

CIBC Mellon Global Securities                          2,164

Investors Bank and Trust Co.                         160,458

JP Morgan (BGI Custody)                              393,640

JP Morgan Chase Bank                                  52,218

Mellon Trust - US Custodian                            5,410

Mellon Trust of New England                            5,256

Northern Trust Bank - BGI SEPA                        16,098

RC Grieg Nominees Ltd                                 27,550

Reflex Nominees Limited                                2,390

State Street Bank & Trust - WI                         9,902

State Street Trust of Canada                           5,047

The Northern Trust Company - U                         3,703


5.         Number of shares acquired:

            Unknown



6.         Percentage of issued class:

            n/a



7.         Number of shares disposed:

            Nil



8.         Percentage of issued class:

            n/a



9.         Class of Security:

            Ordinary shares



10.       Date of transaction:

            12 May 2006



11.       Date company informed:

            17 May 2006



12.       Total holding following this notification:

            2,487,182



13.       Total percentage holding of issued class following this notification:

            5.87%



14.       Name of contact and telephone number for queries:

            Mary Nettleship - 020 7307 9218



15.       Name of company official responsible for making this notification:

            Mary Nettleship, Company Secretary



16.       Date of notification:

            17 May 2006


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