Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES

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

Hammerson plc

2 Reason for the notification (please tick the appropriate box or boxes):

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:

Cohen & Steers, Inc

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

 Cohen & Steers, Inc ("CSI")

Cohen & Steers Capital Management, Inc ("CSCM")

Cohen & Steers Europe S.A. ("CSE")

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

29 July 2010

6. Date on which issuer notified:

2 August 2010

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

Below 5%

8. Notified details:

A: Voting rights attached to shares

Class/type of shares

if possible using the ISIN CODE

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of Shares

Number of Voting Rights

Number of shares

Number of voting rights

% of voting rights

Direct

Direct

Indirect

Direct

Indirect

 Ordinary shares

GB0004065016

35,380,176

35,380,176

35,200,949

35,200,949

 N/A

 4.975%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ Conversion Period

Number of voting rights that may be acquired if the instrument is exercised/ converted.

% of voting rights

 Nil

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

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date

Exercise/ Conversion period

Number of voting rights instrument refers to

% of voting rights

CFD

N/A

N/A

N/A

N/A

Nominal

Delta

N/A

N/A

Total (A+B+C)

Number of voting rights

Percentage of voting rights

 35,200,949

4.975%

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

CSE is the controlled undertaking of CSI and holds 3,795,804 voting rights. This is an indirect holdings of less than 3%.

CSCM is the controlled undertaking of CSI and holds 31,405,145 voting rights. This is an indirect holding of less than 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:

14. Contact name:

 Stuart Haydon

15. Contact telephone number:

 020 7887 1017