Morgan Sindall Group Regulatory News (MGNS)

TR-1: Notifications of Major Interests in Shares

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

Morgan Sindall Group plc

2: Reason for notification (yes/no)

An acquisition or disposal of voting rights

yes

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

no

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

no

An event changing the breakdown of voting rights

no

Other (please specify):

no

3. Full name of person(s) subject to the notification

obligation:

Ameriprise Financial, Inc. and its group

4. Full name of shareholder(s) (if different from 3.):

See additional information under 13

5. Date of the transaction (and date on which the threshold is crossed or reached):

25 June 2013

6. Date on which issuer notified:

26 June 2013

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

5%

8: Notified Details

A: Voting rights attached to shares

Class/type of share If possible use ISIN code

GB0008085614

Situation previous to the triggering transaction

Number of shares

Number of voting rights

N/A

N/A

Resulting situation after the triggering transaction

Number of shares

Number of voting rights

Percentage ofvoting rights

Direct

Indirect

Direct

Indirect

22,700

22,700

2,210,108

0.053%

5.111%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period/date

No. of voting rights that may be acquired(if the instrument exercised/converted)

Percentage of voting rights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Exerciseprice

Expirationdate

Exercise/Conversionperiod

Number of votingrights instrumentrefers to

% of voting rights

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

2,232,808

5.164%

9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable:

Ameriprise Financial, Inc., which through intermediate holding companies controls the voting rights of Columbia Management Investment Advisers, Columbia Wanger Asset Management, Threadneedle Management Luzembrough S.A. and Threadneedle Asset Management Holdings Ltd, which itself controls the voting rights of Threadneedle Asset Management Ltd, Threadneedle International Ltd and Threadneedle Pensions Ltd.

Proxy Voting:

10. Name of the proxy holder:

n/a

11. Number of voting rights proxy holder will cease to hold:

n/a

12. Date on which proxy holder will cease to hold voting rights:

n/a

13. Additional information:

 Registered Owner

14. Contact name:

Mary Nettleship, Company Secretary

15. Contact telephone number:

020 7307 9200

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)

Ameriprise Financial, Inc. and its group

Contact address (registered office for legal entities)

Phone number & email

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

B: Identity of the notifier, if applicable

Full name

Stacey Dryburgh, Threadneedle Group

Contact address

Phone number & email

01793 363751

Other useful information (e.g. functional relationship with the person or legal entity subject to the notification obligation)

C: Additional information