National Grid 2008 Annual Report Download - page 504

BOWNE INTEGRATED TYPESETTING SYSTEM
CRC: 649
Name: NATIONAL GRID
Date: 17-JUN-2008 03:10:51.35Operator: BNY99999TPhone: [phone]Site: BOWNE OF NEW YORK
Y59930.SUB, DocName: EX-12.1, Doc: 13, Page: 1
Description: EXHIBIT 12.1
0/4930.00.00.00Y59930BNY
[E/O] EDGAR 2 *Y59930/930/4*
BOWNE INTEGRATED TYPESETTING SYSTEM
CRC: 649
Name: NATIONAL GRID
Date: 17-JUN-2008 03:10:51.35Operator: BNY99999TPhone: [phone]Site: BOWNE OF NEW YORK
Y59930.SUB, DocName: EX-12.1, Doc: 13, Page: 1 Description: EXHIBIT 12.1
0/4930.00.00.00Y59930BNY
[E/O] EDGAR 2 *Y59930/930/4*
Exhibit 12.1
I, Steve Holliday, certify that:
June 17, 2008
/s/ Steve Holliday
Steve Holliday
Title: Chief Executive
National Grid
p
lc
1. I have reviewed this annual report on Form 20-F of National Grid 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
misleadin
g
with res
p
ect to the
p
eriod covered b
y
this re
p
ort;
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
p
resented in this re
p
ort;
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 15(d) -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 b
y
others within those entities,
p
articularl
y
durin
g
the
p
eriod in which this re
p
ort is bein
g
p
re
p
ared;
(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 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
re
p
ort based on such evaluation; and
(d) 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):
(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; and
(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the
com
p
an
y
’s internal control over financial re
p
ortin
g
.