RB..L Regulatory News (RB.)

For filings with the FCA include the annex

For filings with issuer exclude the annex

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARES i

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

Reckitt Benckiser Group plc

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

An acquisition or disposal of voting rights

Yes

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

Adrian Bellamy (Chairman of Reckitt Benckiser Group plc and Proxy Holder)

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

5 May 2015

6. Date on which issuer notified:

 5 May 2015

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

reached: vi, vii

3%

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type ofshares

if possible usingthe ISIN CODE

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

GB00B24CGK77

23,599

23,599

23,599

23,599

527,088,022

0.0032%

71.563%

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/ConversionPeriod xiv

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

Exerciseprice

Expirationdate xvii

Exercise/Conversionperiod xviii

Number of votingrights instrumentrefers to

% of voting rights xix, xx

Nominal

Delta

Total (A+B+C)

Number of voting rights

Percentage of voting rights

527,111,581

71.566%

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

Proxy Voting:

10. Name of the proxy holder:

Adrian Bellamy

11. Number of voting rights proxy holder will cease to hold:

527,088,022

12. Date on which proxy holder will cease to hold voting rights:

At conclusion of the Annual General Meeting to be held on 7 May 2015 or at any adjournment thereof

13. Additional information:

Disclosed voting rights represent the maximum number of proxies being held by the Chairman of Reckitt Benckiser Group plc pursuant to proxies received in respect of the resolution to be proposed at the Annual General Meeting to be held by the Company on 7 May 2015. The voting rights will lapse immediately upon the conclusion of the Annual General Meeting. Reckitt Benckiser shareholders are still entitled to vote in person at the Annual General Meeting even if they have submitted a proxy.

14. Contact name:

William Mordan, Company Secretary

15. Contact telephone number:

01753 217800