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

25 February 2011

6. Date on which issuer notified:

28 February 2011

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

11%, 10%

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

853,534,666

853,534,666

845,250,432

10.88%

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

845,250,432

10.88%

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

Allianz Global (Frankfurt) - 749,432

Banco Populaire IT - 177,076

Brown Brothers Harriman, New Jersey - 498,306

Bank of Ireland, Dublin - 1,710,782

Bank of New York - 679,397,486

Banque Paribas, Frankfurt - 2,228,963

Bank of New York Mellon - 13,228,950

Bank of New York Singapore - 125,000

Boston Safe Deposit - 1,164,790

Credit Agricole Indosuez, Luxembourg - 594,984

Chase Bank Hong Kong - 1,404,885

JP Morgan Chase - 2,987,294

Chase, Frankfurt - 516,359

Citibank, Luxembourg - 3,579,011

Citibank, (Hong Kong) - 742,161

DGZ Deka Bank (Frankfurt) - 240,799

Erste Group Bank, Austria - 566,026

Feta Investors Services LU - 498,486

HSBC Bank plc, London - 13,416,630

Japan Trustee Services Bank - 754,078

Landersbank Hessen-Thuringen Girozentrale - 208,522

Mellon Bank , Pittsburgh - 2,442,157

B.Metzler seel.Sohn & Co.KG, Frankfurt - 443,488

Morgan Stanley, London - 77,997

Master Trust Bank JP - 70,963

National Custody Services - 387,372

State Street Trust & Banking Co, Boston - 1,662,300

State Street Trust & Banking Co, Hong Kong - 1,320,799

State Street Trust & Banking Co, London - 105,348,424

Trust & Custody Services - 30,237

Northern Trust Company, London - 7,541,494

Vorarlberger Landes-und Hypothekenbk Akti - 166,472

Invesco PowerShares Capital Management LLC Limited - (ADRS ratio 10:1) - 208,120

Invesco PowerShares Capital Management LLC Limited - 652,134

Invesco PowerShares Capital Management Ireland Ltd. - 105,439

Invesco Advisers Inc. - 3,016

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:

BT Group plc

14. Contact name:

Francis O'Mahony

15. Contact telephone number:

020 7356 6143 [email protected]