For filings with the FSA include the annex For filings with issuer exclude the annex TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached: ii

Plant Health Care 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: iii

Henderson Global Investors

4. Full name of shareholder(s)

(if different from 3.):iv

5. Date of the transaction and date on

which the threshold is crossed or reached: v

10 January 2013

6. Date on which issuer notified:

14 January 2013

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

Crossed above 24%

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type of shares

if possible using the ISIN CODE

Situation previous to the triggering transaction

Resulting situation after the triggering transaction

Class/type of shares

if possible using the ISIN CODE

Number of Shares

Number of Voting Rights

Number of shares

Number of voting rights

% of voting rights x

Class/type of shares

if possible using the ISIN CODE

Number of Shares

Number of Voting Rights

Direct

xi

Direct

xii

Indirect

Direct

Indirect

ORD

GB00B01JC540

12,798,409

12,798,409

12,827,109

24.02%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date xiii

Exercise/

Conversion Period xiv

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

xv, xvi

Resulting situation after the triggering transaction

Type of financial instrument

Exercise price

Expiration date xvii

Exercise/ Conversion

period xviii

Number of voting rights instrument refers to

% of voting rights xix,

xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

12,827,109

24.02%


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

Proxy Voting:

13. Additional information:

14. Contact name:

Andrew C. Wood FCIS Company Secretary Plant Health Care plc

15. Contact telephone number:

+44 (0)20 8866 5702

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