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

27 February 2012

6. Date on which issuer notified:

28 February 2012

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

10%, 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

815,866,464

815,866,464

771,518,450

9.91%

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

771,518,450

9.91%

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

Allianz Global (Frankfurt) - 471,382

Brown Brothers Harriman, New Jersey - 523,189

Bank of Ireland, Dublin - 1,739,496

Bank Austria (Frankfurt) - 91,331

Bank of New York - 621,897,483

Banque Paribas, Frankfurt - 781,849

Banque Paribas, Milan - 321,167

Bank of New York Mellon - 13,467,258

Bank of New York Singapore - 125,000

Boston Safe Deposit - 850,991

Chase Bank - 1,696,550

JP Morgan Chase - 2,618,450

Chase, Frankfurt - 516,359

Citibank, Luxembourg - 4,102,078

DGZ Deka Bank (Frankfurt) - 171,380

Erste Group Bank, Austria - 416,936

Feta Investors Services LU - 241,060

HSBC Bank plc, London - 13,585,585

ING-BHF Bank, Frankfurt - 81,910

Japan Trustee Services Bank - 781,328

Mellon Bank , Pittsburgh - 189,698

B.Metzler seel.Sohn & Co.KG, Frankfurt - 292,265

Morgan Stanley, London - 43,549

Master Trust Bank JP - 74,539

National Custody Services - 298,930

Societe Generale FR - 295,549

State Street Trust & Banking Co, Boston - 68,133

State Street Trust & Banking Co, Hong Kong - 20,000

State Street Trust & Banking Co, London - 100,967,933

Trust & Custody Services JP - 30,237

Northern Trust Company, London - 3,290,163

Vorarlberger Landes-und Hypothekenbk Akti - 133,987

Invesco PowerShares Capital Management LLC Limited - 521,147

Invesco PowerShares Capital Management Ireland Ltd. - 697,979

Norddeutsche Landesbank Girozentrale - 113,559

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