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Exchange rates
The following table sets out the $ to £ exchange
rates as indicated:
| As at 19 May 2004 |
|
|
| |
high |
low |
 |
| May 2004* |
1.79 |
1.75 |
 |
| April 2004 |
1.86 |
1.77 |
 |
| March 2004 |
1.87 |
1.79 |
 |
| February 2004 |
1.90 |
1.82 |
 |
| January 2004 |
1.85 |
1.79 |
 |
| December 2003 |
1.78 |
1.72 |
 |
| November 2003 |
1.72 |
1.67 |
 |
| |
average |
** |
 |
| 2003/04 |
1.70 |
|
 |
| 2002/03 |
1.55 |
|
 |
| 2001/02 |
1.44 |
|
 |
| 2000/01 |
1.47 |
|
 |
| 1999/2000 |
1.61 |
|
 |
| * for the period to 19 May 2004 |
| ** the average for each period is calculated by using the average of the exchange rates on the last day of each month during the period |

Analysis of shareholdings
The following analysis of shareholdings is at 19 May 2004:
| size of shareholding |
number of holders |
number of shares held |
% of issued share capital |
 |
| 1-100 |
667,142 |
39,465,751 |
1.28 |
 |
| 101-500 |
649,818 |
135,119,732 |
4.38 |
 |
| 501-1,000 |
65,696 |
45,368,169 |
1.47 |
 |
| 1,001-5,000 |
45,850 |
90,821,622 |
2.94 |
 |
| 5,001-10,000 |
3,276 |
22,222,095 |
0.72 |
 |
| 10,001-50,000 |
1,535 |
30,436,324 |
0.99 |
 |
| 50,001-100,000 |
285 |
20,471,089 |
0.66 |
 |
| 100,001-500,000 |
566 |
133,753,489 |
4.33 |
 |
| 500,001-1,000,000 |
175 |
125,106,504 |
4.05 |
 |
| 1,000,001 and above |
298 |
2,445,112,781 |
79.18 |
 |
| Total |
1,434,641 |
3,087,877,556 |
100.00 |
 |
In addition to the number of ordinary shareholders shown, there are approximately 19,000
beneficial and 26,300 registered holders of ADSs. These ADSs represent approximately 2.92%
of the issued ordinary share capital.

Market prices
The following table sets out the highest and lowest market prices for National Grid Transco ordinary
shares and ADSs for the periods indicated:
| |
ordinary share (p) |
ADS ($) |
 |
| |
high |
low |
high |
low |
 |
| 2003/04 |
438.00 |
374.75 |
41.450 |
30.190 |
 |
| 2002/03 |
511.50 |
365.75 |
37.400 |
26.690 |
 |
| 2001/02 |
581.00 |
417.25 |
41.750 |
30.400 |
 |
| 2000/01 |
646.00 |
479.50 |
47.875 |
37.000 |
 |
| 1999/2000 |
597.00 |
388.50 |
48.125 |
31.875 |
 |
| 2003/04 |
|
|
|
|
| Q1 |
421.00 |
394.00 |
34.980 |
31.060 |
| Q2 |
406.75 |
374.75 |
34.120 |
30.190 |
| Q3 |
406.25 |
376.25 |
36.250 |
32.000 |
| Q4 |
438.00 |
385.00 |
41.450 |
35.590 |
 |
| 2002/03 |
|
|
|
|
| Q1 |
511.50 |
459.00 |
37.400 |
32.870 |
| Q2 |
472.25 |
402.25 |
36.500 |
31.400 |
| Q3 |
480.00 |
418.00 |
37.140 |
32.800 |
| Q4 |
448.00 |
365.75 |
35.920 |
29.690 |
 |
| May 2004* |
433.50 |
421.25 |
39.340 |
37.590 |
 |
| April 2004 |
436.25 |
422.50 |
40.550 |
38.390 |
 |
| March 2004 |
438.00 |
418.00 |
41.450 |
38.000 |
 |
| February 2004 |
431.00 |
397.00 |
40.600 |
36.830 |
 |
| January 2004 |
404.75 |
385.00 |
37.560 |
35.590 |
 |
| December 2003 |
400.25 |
379.25 |
36.250 |
33.750 |
 |
| November 2003 |
406.25 |
377.25 |
34.810 |
32.100 |
 |
| * for the period to 19 May 2004 |

Trading markets for ordinary shares
National Grid Transco’s ordinary shares have
been listed on the London Stock Exchange
since 11 December 1995. National Grid
Transco’s ADRs have had a full listing on
the New York Stock Exchange since
7 October 1999.

Documents on display
National Grid Transco is subject to the filing
requirements of the US Securities Exchange Act
of 1934. In accordance with these requirements,
National Grid Transco files reports and other
information with the US Securities and Exchange
Commission (SEC). These materials, including
this document, may be inspected during normal
business hours at National Grid Transco’s
registered office at 1-3 Strand, London WC2N
5EH or at the SEC’s Public Reference Room at
450 Fifth Street, NW, Washington, DC 20549. For
further information about the Public Reference
Room, please call the SEC on 1-800-SEC-0330.
Some of National Grid Transco’s filings are also
available on the SEC’s website at www.sec.gov.

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