Holding(s) in Company

For filings with the FSA include the annex

For filings with issuer exclude the annex 

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:

Great Portland Estates Plc

GB00B01FLL16

2. Reason for notification (yes/no)

An acquisition or disposal of voting rights

X

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

An event changing the breakdown of voting rights

Other (please specify):______________

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

Fortis Investment Management S.A

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

CSA L REAL ESTATE EUROPE

FORTIS PROPERTY RETAIL FUND

GLOBAL PROPERTY SECURITIES FUNDS EUR

CSA B PENSION EQUITY EEA SMALL CAPS

SMAM INTERNATIONAL REIT MOTHER FUND E

Property Securities Europe Fd (APFPFE)

FLF EQ SMALL CAPS EUROPE

GA L FUND SMALL MID CAPS EUROPE

CSA B REAL ESTATE EUROPE

A.A. FORTIS ACTIONS PETITE CAP EUROPE

AMP CAPITAL INVESTOR

RUSSELL EUROPEAN SMALL CAP EQUITY FUND

LITHIUM

CSM Nederland Property (APCSMP)

ABN AMRO GLOBAL PROPERTY EQUITY FUND

Investeringsforeningen Alfred Berg (AEIFAB)

BUHRMANN

CSA L EUROPEAN SMALL CAPS

Alfred Berg Small Cap Europe Unit Trust

FBF EQ SMALL CAPS EUROPE

CSA B EUROPEAN SMALL CAPS

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

9/10/2008

6. Date on which issuer notified:

10/10/2008

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

Over 4%

8: Notified Details

A: Voting rights attached to shares

Class/type of shares

If possible use ISIN code

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Number of shares

Number of voting rights

Number of shares

Direct

Number of voting rights

Percentage of voting rights

Direct

Indirect

Direct

Indirect

GB00B01FLL16

6,903,376

7,500,779

7,500,779

4.14%

B: 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

Total (A+B)

Number of voting rights

Percentage of voting rights

7,500,779

4.14%

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

Proxy Voting:

10. Name of proxy holder:

Fortis Investment Management S.A. and subsidiaries

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:

15. Contact telephone number: