Holding(s) in Company

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

BT Group 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 thenotification obligation: iii

Atlas Services Belgium S.A.

Orange S.A.

4. Full name of shareholder(s)  (if different from 3.):iv

Registered holder:

Bank of New York (Nominees) Limited

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

Monday 19 June 2017

6. Date on which issuer notified:

Thursday 22 June 2017

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

Atlas Services Belgium S.A.: direct holding has fallen below 3% (reduced from 4% to 2.66%)

Orange S.A.: indirect holding has fallen below 3% (reduced from 4% to 2.66%)

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

Ordinary shares of £0.05 each

(ISIN Code: GB0030913577) indirectly held by Orange S.A.)

-

398,725,107

-

-

265,725,107

-

2.66

Ordinary shares of £0.05 each

(ISIN Code: GB0030913577) directly held by Atlas Services Belgium S.A.

398,725,107

398,725,107

265,725,107

265,725,107

-

2.66

-

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period 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

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

265,725,107

2.66

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

Orange S.A. owns the entire issued share capital of Atlas Services Belgium SA. On 19 June 2017, Atlas Services Belgium S.A. sold, by way of an Accelerated Book Building Placement, a 1.33% holding in BT Group plc to: (a) the issuer and the BT Group Employee Share Ownership Trust ( in aggregate, a disposal of circa 69 million ordinary shares); and (b) to institutional and qualified investors (a disposal of circa 64 million ordinary shares).

Note: The remaining 265,725,107 ordinary shares of the issuer held by Atlas Services Belgium S.A. are registered in the name of Bank of New York (Nominees) Limited in its capacity as nominee of Atlas Services Belgium S.A.

Proxy Voting:

10. Name of the proxy holder:

N/A

11. Number of voting rights proxy holder will ceaseto hold:

N/A

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

N/A

13. Additional information:

N/A

14. Contact name:

Mr Cédric Testut

15. Contact telephone number:

+ 33 1 44 44 08 92