For filings with the FSA include the annex

For filings with issuer exclude the annex

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. ldentity of the issuer or the underlying issuer of existing shares to which voting rights are attached: 11

Dechra Pharmaceuticals pie

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 economie effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please pe ):

3. Full name of person() subject to the notification obligation: 111

Other (please pe ):

3. Full name of person() subject to the notification obligation: 111

lnvesco Limited

4. Full name of sha eholder(s) (if different from 3.):1

v

5. Date of the transaction and date on

which the threshold is crossed or reached: v

31 December 2012

6. Date on which issuer notified:

02 January 2013

7. Thresh ld,(s) that is/are crossed or reached: vi, vu

5%,4%

on us to the triggering transaction

Resulting situation after the triggering transaction

if possible using

Number

Number

Number

umber of voting

the ISIN CODE

of

of

of shares

hts

Shares

Voting

Direct

Direct xi lndirect xii

Direct

lndirect

Ordinary 1p

Shares

4,348,519

4,348,519

4,352,940

4.99%

GB0009633180

Resulting situation after the triggering transaction

Type of financial

Expiration

Exercise/

Number of voting

ng

instrument

date xiii

Conversion Period xiv

rights that may be acquired if the instrument is

rights

exercised/ converted.

Resulting situation after the triggering transaction

Type of financial

instrument

Exercise price

Expiration date xvii

od xviii

Number of voting rights instrument refers to

% of voting rights

xx

Nominai

Delta

Number of voting rights

4,352,940

Percentage of voting rights

4.99%

,

lnvesco Asset Management Ltd - 936,162 lnvesco Fund Managers Ltd- 3,068,384
lnvesco Asset Management Dublin Ltd- 274,501
lnvesco Asset Management Ltd & lnvesco Advisers lnc.- 23,461 lnvesco Canada Ltd & lnvesco Advisers lne.- 21,954
lnvesco GT Management S.A -14,723
lnvesco Asset Management Japan Ltd- 6,145
lnvesco PowerShares Ca tal Man Limited- 4 61O
1O. Name of the proxy holder:
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:

14. Contact name:

Zoe Richards

15. Contact telephone number:

01491 417249

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