Holding(s) in Company

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}

RNS Number : 8167A

Indivior PLC

29 December 2014

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

Indivior PLC

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

An acquisition or disposal of voting rights
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):	Reckitt Benckiser Group ("RB Group") demerger of the Reckitt Benckiser Pharmaceutical business; RB Group shareholders received one ordinary share in Indivior PLC for each ordinary share in RB Group held on 23 December 2014.	Yes

3. Full name of person(s) subject to the notification obligation: ⁱⁱⁱ	Massachusetts Financial Services Company
4. Full name of shareholder(s) (if different from 3.):^iv	MFS invests in securities of the issuer on behalf of its various mutual funds and institutional account clients.
5. Date of the transaction and date on which the threshold is crossed or reached: ^v	23 December 2014
6. Date on which issuer notified:	24 December 2014
7. Threshold(s) that is/are crossed or reached: ^{vi, vii}	5%

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
GB00BRS65X63	N/A		N/A					39,878,835			5.5497%

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

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

Entity Holding Percentage Held

MFS Investment Management (LUX) S.A. (LUX) 1,743,939.00 0.2427%

MFS Investment Management Canada Ltd 1,368,913.00 0.1905%

MFS - Massachusetts Financial Services Company 18,000,835.00 2.5051%

MFS Heritage Trust Company 373,575.00 0.0521%

MFS Institutional Advisors, Inc. 8,773,415.00 1.2209%

MFS International Singapore Pte. Ltd. 206,290.00 0.0287%

MFS International (U.K.) Ltd. 6,448,819.00 0.8974%

MFS Investment Management K.K. 2,963,049.00 0.4123%

Notifiable Interest 39,878,835 5.5497%

Shares Outstanding 718,577,616

Proxy Voting:
10. Name of the 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

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)
Contact address (registered office for legal entities)
Phone number & email
Other useful information (at least legal representative for legal persons)

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)