Holding(s) in Company

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

RNS Number : 5885A

Cohort PLC

02 February 2011

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:

Cohort plc

2 Reason for the notification (please tick the appropriate box or boxes):
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:

Aviva plc & its subsidiaries

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

Registered Holder:

BNY Norwich Union

Nominees Limited 200,520*

Chase (GA Group)

Nominees Limited 1,249,880*

* denotes direct interest

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

31 January 2011

6. Date on which issuer notified:

01 February 2011

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

<3% to 3% Change at Direct Interest Level

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	Number of shares	Number of voting rights		% of voting rights
			Direct	Direct	Indirect	Direct	Indirect
Ordinary Shares GB00B0YD2B94	N/A	N/A	1,450,400	1,450,000	Not Disclosable	3.56%	Not Disclosable

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

Total (A+B+C)

Number of voting rights

Percentage of voting rights

1,450,400

3.56%

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

The voting rights are managed and controlled by Aviva Investors Global Services Limited, with the following chain of controlled undertakings:-

Aviva Investors Global Services Limited:

- Aviva plc (Parent Company)

- Aviva Group Holdings Limited (wholly owned subsidiary of Aviva plc)
- Aviva Investors Holdings Limited (wholly owned subsidiary of Aviva Group Holdings Limited)

- Aviva Investors Global Services Limited (wholly owned subsidiary of Aviva Investors

Holdings Limited)

Proxy Voting:

10. Name of the proxy holder:

See Section 4

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:

Figures are based on a total number of voting rights of 40,786,788 as per the Company's Total Voting Rights Announcement 30 November 2009.

14. Contact name:

Niel Whittaker, Aviva plc

15. Contact telephone number: