Holding(s) in Company

TR-1: notification 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 the notification  (please tick the appropriate box or boxes)

An acquisition or disposal of voting rights 

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):

Update to Total Voting Rights figure triggered this notification

Χ

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

Prudential plc group of companies

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

See appendix below

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

1 June 2009

6. Date on which issuer notified:

2 June 2009

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

See item 13

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 viii

Number of shares

Number of voting rights ix

% of voting rights

Direct

Direct x

Indirect xi

Direct

Indirect

GB0002625654

52,233,598

52,233,598

52,233,598

52,233,598

8.77%

B: Financial Instruments

Resulting situation after the triggering transaction xii

Type of financial instrument

Expiration date xiii

Exercise/ Conversion Period/ Date xiv

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

% of voting rights

N/A

N/A

N/A

N/A

N/A

Total (A+B)

Number of voting rights

% of voting rights

52,233,598

8.77%

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

Prudential plc (parent Company)

M&G Group Limited (wholly owned subsidiary of Prudential plc)

M&G Limited (wholly owned subsidiary of M&G Group Limited)

M&G Investment Management Limited (wholly owned subsidiary of M&G Limited)

M&G Securities Limited (wholly owned subsidiary of M&G Limited)

The Prudential Assurance Company Limited (wholly owned subsidiary of Prudential plc)

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:

As per 5.1.2, the non-exempt holdings for Prudential Assurance Company Limited (wholly owned subsidiary of Prudential plc) has crossed 6% triggering this notification.

14. Contact name:

Dipesh Varsani / Mark Thomas

M&G Investment Management Limited

15. Contact telephone number:

020 7548 3261 / 020 7548 3266

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

Registered Holder

Holding

%

Prudential plc

52,233,598

8.77

BK OF NEW YORK(NOMS)LTD/636924

637,816

JP MORGAN NOMINEES

81,201

NORTRUST NOMINEE LTD A/C MHE01

400,000

NORTRUST NOMINEE LTD A/C MHF01

131,912

NORTRUST NOMS LTD

539,190

NORTRUST NOMS LTD A/C MED01

2,820,000

NORTRUST NOMS LTD A/C MXC01

270,000

NORTRUST NOMS LTD A/C PUF01

681,875

NORTRUST NOMS LTD A/C PUI01

81,417

NORTRUST NOMS LTD A/C PUR01

10,243,522

PCA EUROPEAN LEADERS EQUITY FD

206,244

PRUCLT HSBC GIS NOM(UK) PAC AC

35,454,447

PRUCLT HSBC GIS NOM(UK) PPL AC

526,374

STATE STREET NOMS

159,600

M&G Group Limited

51,514,581

8.65

NORTRUST NOMINEE LTD A/C MHE01

400,000

NORTRUST NOMINEE LTD A/C MHF01

131,912

NORTRUST NOMS LTD

539,190

NORTRUST NOMS LTD A/C MED01

2,820,000

NORTRUST NOMS LTD A/C MXC01

270,000

NORTRUST NOMS LTD A/C PUF01

681,875

NORTRUST NOMS LTD A/C PUI01

81,417

NORTRUST NOMS LTD A/C PUR01

10,243,522

PCA EUROPEAN LEADERS EQUITY FD

206,244

PRUCLT HSBC GIS NOM(UK) PAC AC

35,454,447

PRUCLT HSBC GIS NOM(UK) PPL AC

526,374

STATE STREET NOMS

159,600

M&G Investment Management Limited

51,158,985

8.59

NORTRUST NOMINEE LTD A/C MHE01

400,000

NORTRUST NOMS LTD

315,506

NORTRUST NOMS LTD A/C MED01

2,820,000

NORTRUST NOMS LTD A/C MXC01

270,000

NORTRUST NOMS LTD A/C PUF01

681,875

NORTRUST NOMS LTD A/C PUI01

81,417

NORTRUST NOMS LTD A/C PUR01

10,243,522

PCA EUROPEAN LEADERS EQUITY FD

206,244

PRUCLT HSBC GIS NOM(UK) PAC AC

35,454,447

PRUCLT HSBC GIS NOM(UK) PPL AC

526,374

STATE STREET NOMS

159,600

M&G Limited

51,514,581

8.65

NORTRUST NOMINEE LTD A/C MHE01

400,000

NORTRUST NOMINEE LTD A/C MHF01

131,912

NORTRUST NOMS LTD

539,190

NORTRUST NOMS LTD A/C MED01

2,820,000

NORTRUST NOMS LTD A/C MXC01

270,000

NORTRUST NOMS LTD A/C PUF01

681,875

NORTRUST NOMS LTD A/C PUI01

81,417

NORTRUST NOMS LTD A/C PUR01

10,243,522

PCA EUROPEAN LEADERS EQUITY FD

206,244

PRUCLT HSBC GIS NOM(UK) PAC AC

35,454,447

PRUCLT HSBC GIS NOM(UK) PPL AC

526,374

STATE STREET NOMS

159,600

The Prudential Assurance Company Limited

35,980,821

6.04

PRUCLT HSBC GIS NOM(UK) PAC AC

35,454,447

PRUCLT HSBC GIS NOM(UK) PPL AC

526,374