Holding(s) in Company

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:

Informa Plc

An acquisition or disposal of voting rights	X
An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached.
An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments
An event changing the breakdown of voting rights
Other (please specify):

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 list below
5. Date of the transaction and date on which the threshold is crossed or reached:	14 June 2011
6. Date on which issuer notified:	15 June 2011
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
ORD GBP0.001 JE00B3WJHK45

Situation previous to the triggering transaction

Number of Shares	Number of Voting Rights
38,585,996	38,585,996

Resulting situation after the triggering transaction

	Number of voting rights		% of voting rights
Number of shares	Direct	Indirect	Direct	Indirect
38,472,552	38,281,614	190,938	6.37%	0.03%

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

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

Nominal	Delta

Total (A+B+C)

Number of voting rights	Percentage of voting rights
38,472,552	6.40%

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

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) 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:	The Prudential Assurance Company Limited (a wholly owned subsidiary of Prudential plc) has dropped below a 5% notifiable interest triggering this notification.
14. Contact name:	Ajay Patel / 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)	22 Grenville Street, St Helier, Jersey JE4 8PX
Phone number & email	020 7017 4314 [e-mail]
Other useful information (at least legal representative for legal persons)	Julie Woollard 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

Appendix

Notifiable Position Report for INFORMA PLC as at 14 June 2011

Percentage holdings are calculated using 601,113,429 Total Voting Rights

	Registered Holder	Holding	Voting Rights	%
Prudential plc			38,472,552	6.40
Direct	Nortrust Nominee Ltd A/C MHE01	400,000	400,000
	Nortrust Nominee Ltd A/C MHF01	131,912	131,912
	Nortrust Nominee Ltd A/C MHJ01	1,377,586	1,377,586
	Nortrust Nominee Ltd A/C MKB01	381,377	381,377
	Nortrust Nominee Ltd A/C MKD01	1,000,000	1,000,000
	Nortrust Noms Ltd	570,783	570,783
	Nortrust Noms Ltd A/C MXC01	53,131	53,131
	Nortrust Noms Ltd A/C PUI01	33,731	33,731
	Nortrust Noms Ltd A/C PUR01	4,334,445	4,334,445
	PRUCLT HSBC GIS NOM(UK) PAC AC	29,095,085	29,095,085
	PRUCLT HSBC GIS NOM(UK) PPL AC	903,564	903,564
	Sub total	38,281,614	38,281,614
Indirect	JP Morgan Nominees	85,338	85,338
	State Street Noms	105,600	105,600
	Sub total	190,938	190,938
M&G Group Limited			38,387,214	6.38
	Nortrust Nominee Ltd A/C MHE01	400,000	400,000
	Nortrust Nominee Ltd A/C MHF01	131,912	131,912
	Nortrust Nominee Ltd A/C MHJ01	1,377,586	1,377,586
	Nortrust Nominee Ltd A/C MKB01	381,377	381,377
	Nortrust Nominee Ltd A/C MKD01	1,000,000	1,000,000
	Nortrust Noms Ltd	570,783	570,783
	Nortrust Noms Ltd A/C MXC01	53,131	53,131
	Nortrust Noms Ltd A/C PUI01	33,731	33,731
	Nortrust Noms Ltd A/C PUR01	4,334,445	4,334,445
	PRUCLT HSBC GIS NOMS(UK) PAC AC	29,095,085	29,095,085
	PRUCLT HSBC GIS NOM(UK) PPL AC	903,564	903,564
	STATE STREET NOMS	105,600	105,600
M&G Investment Management Limited			37,772,632	6.28
	Nortrust Nominee Ltd A/C MHE01	400,000	400,000
	Nortrust Nominee Ltd A/C MHJ01	1,377,586	1,377,586
	Nortrust Nominee Ltd A/C MKB01	381,377	381,377
	Nortrust Nominee Ltd A/C MKD01	1,000,000	1,000,000
	Nortrust Noms Ltd	88,113	88,113
	Nortrust Noms Ltd A/C MXC01	53,131	53,131
	Nortrust Noms Ltd A/C PUI01	33,731	33,731
	Nortrust Noms Ltd A/C PUR01	4,334,445	4,334,445
	PRUCLT HSBC GIS NOMS(UK) PAC AC	29,095,085	29,095,085
	PRUCLT HSBC GIS NOM(UK) PPL AC	903,564	903,564
	STATE STREET NOMS	105,600	105,600
M&G Limited		38,387,214	6.38
	Nortrust Nominee Ltd A/C MHE01	400,000	400,000
	Nortrust Nominee Ltd A/C MHF01	131,912	131,912
	Nortrust Nominee Ltd A/C MHJ01	1,377,586	1,377,586
	Nortrust Nominee Ltd A/C MKB01	381,377	381,377
	Nortrust Nominee Ltd A/C MKD01	1,000,000	1,000,000
	Nortrust Noms Ltd	570,783	570,783
	Nortrust Noms Ltd A/C MXC01	53,131	53,131
	Nortrust Noms Ltd A/C PUI01	33,731	33,731
	Nortrust Noms Ltd A/C PUR01	4,334,445	4,334,445
	PRUCLT HSBC GIS NOMS(UK) PAC AC	29,095,085	29,095,085
	PRUCLT HSBC GIS NOM(UK) PPL AC	903,564	903,564
	STATE STREET NOMS	105,600	105,600
The Prudential Assurance Company Limited			29,998,649	4.99
	PRUCLT HSBC GIS NOMS(UK) PAC AC	29,095,085	29,095,085
	PRUCLT HSBC GIS NOM(UK) PPL AC	903,564	903,564

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