Holding(s) in Company

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:

Informa plc

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:

Prudential plc group of companies

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

Prudential plc

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

7 May 2008

6. Date on which issuer notified:

12 May 2008

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

5%

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

Number of voting rights

Percentage of voting rights

Direct

Indirect

Direct

Indirect

GB0002625654

Below 5%

Below 5%

21,756,358

21,756,358

5.11%

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

N/A

N/A

N/A

N/A

N/A

Total (A+B)

Number of voting rights

Percentage of voting rights

21,756,358

5.11%

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

Prudential plc (parent Company)

Registered Holder

Holding

BK OF NEW YORK(NOMS)LTD/636924

564,692

JP MORGAN NOMINEES

69,334

M&G EUROPEAN SPECIAL SITS FUND

110,074

MAGIM HSBC GIS NOM(UK) SALI

302,947

NORTRUST NOMINEE LTD A/C MHE01

500,000

NORTRUST NOMINEE LTD A/C MHF01

88,238

NORTRUST NOMS LTD

165,237

NORTRUST NOMS LTD A/C MED01

2,400,000

NORTRUST NOMS LTD A/C PUF01

379,906

NORTRUST NOMS LTD A/C PUI01

42,470

NORTRUST NOMS LTD A/C PUR01

4,914,957

PCA EUROPEAN LEADERS EQUITY FD

331,482

PRUCLT HSBC GIS NOM(UK) PAC AC

10,600,818

PRUCLT HSBC GIS NOMN(UK) PPL AC

343,674

PRUCLT HSBC GIS NOM(UK)EQBF AC

116,009

PRUCLT HSBC GIS NOM(UK)MNBF AC

160,260

PRUCLT HSBC GIS NOM(UK)PENE AC

666,260

Proxy Voting:

10. Name of 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:

None

14 Contact name:

Dipesh Varsani

M&G Investment Management Limited

15. Contact telephone name:

020 7548 3261

Annex: Notification of major interests in shares

A: Identity of the persons or legal entity subject to the notification obligation

Full name 

(including legal form of legal entities)

INFORMA PLC

Contact address 

(registered office for legal entities)

37-41 MORTIMER STREET

LONDON, W1T 3JH

Phone number & email

020 7017 4314

[email protected]

Other useful information 

(at least legal representative for legal persons)

JULIE WILSON

DEPUTY COMPANY SECRETARY

B: Identity of the notifier, if applicable

Full name

Contact address

Phone number & email

Other useful information

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

C: Additional information