Holding(s) in Company

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	YES
An acquisition or disposal of 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 notification obligation:	Standard Life Investments Ltd
4. Full name of shareholder(s) (if different from 3):	Vidacos Nominees
5. Date of transaction (and date on which the threshold is crossed or reached if different):	31 August 2010
6. Date on which issuer notified:	1 September 2010
7. Threshold(s) that is/are crossed or reached:	3% Direct

8: Notified Details

A: Voting rights attached to shares

Class/type of shares If possible use ISIN code	Situation previous to the triggering transaction
	Number of shares	Number of voting rights
JE00B3WJHK45	27,679,394	27,679,394

Resulting situation after the triggering transaction

Number of shares	Number of voting rights		Percentage of voting rights
	Direct	Indirect	Direct	Indirect
27,391,613	18,004,609	9,387,004	2.997%	1.563%

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+C)

Number of voting rights	Percentage of voting rights
27,391,613	4.56%

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:	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:	N/A
14 Contact name:	[e-mail] Standard Life Investments Ltd
15. Contact telephone name:	[phone]

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 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

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Provider		Channel		Contact
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