Exhibit 12.1
 CERTIFICATION
  1.
    
    I have reviewed this annual report on Form 20-F of BT Group plc;2.
    
    Based on my knowledge, this report does not contain any untrue statement of a
material fact or omit to state a material fact necessary to make the statements made,
in light of the circumstances under which such statements were made, not misleading
with respect to the period covered by this report;3.
    
    Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects the
financial condition, results of operations and cash flows of the company as of, and
for, the periods presented in this report;4.
    
    The companys other certifying officer and I are responsible for establishing
and maintaining disclosure controls and procedures (as defined in Exchange Act Rules
13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in
Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and have:
 a)
    
    Designed such disclosure controls and procedures,
or caused such disclosure controls and procedures to be designed under
our supervision, to ensure that material information relating to the
company, including its consolidated subsidiaries, is made known to us by
others within those entities, particularly during the period in which
this report is being prepared;b)
    
    Designed such internal control over financial
reporting, or caused such internal control over financial reporting to
be designed under our supervision, to provide reasonable assurance
regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with generally
accepted accounting principles;c)
    
    Evaluated the effectiveness of the companys
disclosure controls and procedures and presented in this report our
conclusions about the effectiveness of the disclosure controls and
procedures, as of the end of the period covered by this report based on
such evaluation; andd)
    
    Disclosed in this report any change in the
companys internal control over financial reporting that occurred during
the period covered by the annual report that has materially affected, or
is reasonably likely to materially affect, the companys internal
control over financial reporting; and
 5.
    
    The companys other certifying officer and I have disclosed, based on our
most recent evaluation of internal control over financial reporting, to the companys
auditors and the audit committee of the companys board of directors (or persons
performing the equivalent functions):




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a)
    
    All significant deficiencies and material
weaknesses in the design or operation of internal control over financial
reporting which are reasonably likely to adversely affect the companys
ability to record, process, summarize and report financial information;
andb)
    
    Any fraud, whether or not material, that involves
management or other employees who have a significant role in the
companys internal control over financial reporting.
  /s/ Ian LivingstonName:
    
    Ian LivingstonTitle:
    
    Chief Executive