Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

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

Invesco Limited

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

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

01 August 2012

6. Date on which issuer notified:

02 August 2012

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

9%

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 5p Shares

778,824,438

778,824,438

778,912,816

9.88%

GB0030913577

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

778,912,816

9.88%

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

Invesco Advisers Inc. & Invesco Asset Management Ireland - 68,133

Invesco Asset Management GmbH & Invesco GT Management - 6,302,717

Invesco Asset Management Ltd & Invesco Asset Management Ireland - 3,488,329

Invesco Asset Management Ltd & Invesco Asset Management Japan - 1,297,546

Invesco Asset Management Japan - 822,738

Invesco Asset Management Dublin - 6,847,800

Invesco Asset Management GmbH - 2,474,401

Invesco Asset Management Limited - 193,614,117

Invesco Asset Management S.A (France) - 37,479

Invesco Australia Limited - 296,220

Invesco Austria & Invesco Asset Management GmbH - 133,248

Invesco GT Management S.A - 54,756

Invesco Hong Kong Limited - 1,648,248

Invesco Kapitalanlagegesellschaft GmbH - 848,630

Invesco Fund Managers Limited - 559,994,903

Invesco PowerShares Capital Management Ireland - 578,040

Invesco PowerShares Capital Management Limited - 276,136

ADR's 10:1 = 140,375

Proxy Voting:

10. Name of the proxy holder:

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

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

13. Additional information:

14. Contact name:

Anna Watch

15. Contact telephone number:

020 7356 5158