Holding(s) in Company

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

Allergy Therapeutics 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

SOUTHERN FOX INVESTMENTS LTD.

4. Full name of shareholder(s)

 (if different from 3.):iv

 CHASE NOMINEES

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

25th May, 2012

6. Date on which issuer notified:

30th May, 2012

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

Over 14%

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

Number of Shares

Number of Voting Rights

Number of shares

Number of voting rights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

Ord GBP 0.01

41,527,247

41,527,247

58,260,011

58,260,011

14.32%

GB00B02LCQ05

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

N/A

N/A

N/A

N/A

N/A

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

58,260,011

14.32%

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

Proxy Voting:

10. Name of the proxy holder:

SOUTHERN FOX INVESTMENTS LTD.

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:

14. Contact name:

George O'Carroll

15. Contact telephone number:

+353-61-472019

Note: Annex should only be submitted to the FSA not the issuer

Annex: Notification of major interests in share

A: Identity of the persons or legal entity subject to the notification obligation

Full name

(including legal form of legal entities)

SOUTHERN FOX INVESTMENTS LTD.

Contact address

(registered office for legal entities)

QUEENSGATE HOUSE, SOUTH CHURCH STREET, PO BOX 1234, GRAND CAYMAN KY1-1108, CAYMAN ISLANDS

Phone number & email

1 (345) 949 9876

Other useful information

(at least legal representative for legal persons)

Ogier Law Firm - Legal Representative

B: Identity of the notifier, if applicable

Full name

George O 'Carroll

Contact address

Phone number & email

+353-61-472019

Other useful information

(e.g. functional relationship with the person or legal entity subject to the notification obligation)

Administration

C: Additional information

For notes on how to complete form TR-1 please see the FSA website.