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Transaction in Own Shares

6th Feb 2017 18:13

RNS Number : 1673W

National Grid PLC

06 February 2017

6 February 2017

National Grid plc ("National Grid")

ISIN Code: B00B08SNH3

Transaction in Own Shares

National Grid announces that it has purchased the following number of its Ordinary shares of 1117/43p each on the London Stock Exchange from Merrill Lynch International ("MLI") as part of its buy-back programme announced on 6 February 2017.

Date of purchase:	6 February 2017
Number of Ordinary shares of 1117/43p each purchased:	500,000
Highest price paid per share (pence):	934.2929
Lowest price paid per share (pence):	934.2929
Volume weighted average price paid per share	934.2929

National Grid intends to hold the purchased shares in treasury. Following the purchase of these shares, National Grid holds 190,516,933 of its Ordinary shares in treasury and has 3,752,466,514 Ordinary shares in issue (excluding treasury shares).

In accordance with Article 5(1)(b) of Regulation (EU) No 596/2014 (the "Market Abuse Regulation"), a schedule of individual trades by MLI on 6 February 2017 is set out below.

Schedule of purchases - individual transactions

Transaction Time	Price per share (p)	Quantity of shares purchased
Transaction Time	Price per share (p)
08:21:19	929.70	146
08:21:19	929.70	659
08:21:19	929.70	805
08:23:53	930.60	201
08:23:53	930.60	450
08:23:53	930.60	806
08:24:58	931.30	107
08:24:58	931.30	227
08:24:58	931.30	241
08:24:58	931.30	520
08:24:58	931.30	800
08:24:58	931.30	800
08:25:33	930.80	85
08:25:33	930.80	800
08:25:33	930.80	800
08:26:32	930.10	26
08:26:32	930.10	86
08:27:13	930.50	119
08:27:13	930.50	800
08:27:13	930.50	800
08:27:54	930.90	84
08:27:54	930.90	173
08:27:54	930.90	241
08:27:54	930.90	563
08:27:54	930.90	631
08:30:15	931.90	131
08:30:15	931.90	801
08:30:15	931.90	801
08:31:14	932.30	743
08:31:14	932.30	801
08:32:21	931.80	292
08:32:21	931.80	323
08:32:21	931.80	509
08:32:32	931.80	23
08:32:38	931.80	185
08:32:38	931.80	455
08:32:59	931.10	801
08:33:02	931.10	648
08:35:08	932.70	121
08:35:08	932.70	801
08:35:08	932.70	801
08:36:03	932.40	18
08:36:03	932.40	89
08:36:03	932.40	89
08:36:03	932.40	122
08:36:03	932.40	140
08:36:03	932.40	226
08:36:03	932.40	350
08:36:03	932.40	805
08:36:50	932.40	739
08:36:50	932.40	804
08:38:07	931.70	56
08:38:07	931.70	801
08:38:07	931.70	801
08:39:28	931.80	57
08:39:28	931.80	805
08:39:29	931.80	700
08:39:45	931.80	11
08:44:54	933.00	11
08:44:54	933.00	19
08:44:54	933.00	31
08:44:54	933.00	35
08:44:54	933.00	37
08:44:54	933.00	99
08:44:54	933.00	109
08:44:54	933.00	730
08:44:54	933.00	803
08:44:54	933.00	803
08:44:54	933.00	804
08:44:54	933.00	804
08:44:54	933.00	806
08:44:54	933.00	806
08:44:54	933.00	807
08:47:58	932.90	340
08:47:58	932.90	400
08:47:58	932.90	520
08:48:40	932.90	342
08:48:40	932.90	350
08:48:40	932.90	800
08:48:41	932.80	23
08:48:41	932.80	218
08:48:41	932.80	218
08:48:41	932.80	369
08:48:41	932.80	805
08:49:23	932.90	163
08:49:23	932.90	804
08:49:25	932.90	17
08:49:25	932.90	500
08:51:50	933.90	78
08:51:50	933.90	145
08:51:50	933.90	659
08:51:50	933.90	804
08:54:35	933.40	100
08:54:35	933.40	100
08:54:35	933.40	100
08:54:35	933.40	100
08:54:35	933.40	100
08:54:35	933.40	100
08:54:35	933.40	100
08:54:35	933.40	100
08:54:36	933.40	4
08:54:36	933.40	196
08:54:38	933.40	100
08:54:39	933.40	49
08:54:39	933.40	100
08:54:39	933.40	100
08:54:39	933.40	100
08:54:56	933.40	44
08:56:54	933.50	348
08:56:54	933.50	454
08:56:54	933.50	522
08:57:05	933.50	71
08:57:05	933.50	280
08:58:04	933.60	92
08:58:04	933.60	92
08:58:04	933.60	641
08:58:04	933.60	711
09:00:48	933.50	69
09:00:48	933.50	150
09:00:48	933.50	297
09:00:48	933.50	356
09:00:48	933.50	803
09:01:54	934.50	98
09:03:25	935.00	1
09:03:25	935.00	220
09:03:25	935.00	802
09:03:25	935.00	803
09:04:38	934.90	207
09:04:38	934.80	637
09:04:38	934.90	800
09:04:38	934.90	800
09:04:38	934.80	801
09:06:58	934.70	10
09:06:58	934.70	50
09:06:58	934.70	752
09:06:58	934.70	802
09:09:10	936.00	36
09:09:10	936.00	258
09:09:10	936.00	270
09:09:10	936.00	273
09:09:10	936.00	273
09:09:10	936.00	528
09:09:28	935.60	807
09:09:28	935.60	807
09:09:29	935.60	93
09:12:10	936.20	800
09:12:33	936.20	6
09:12:33	936.20	801
09:12:40	936.20	23
09:12:40	936.20	649
09:12:40	936.20	695
09:14:10	936.40	800
09:14:23	936.40	653
09:16:10	936.00	43
09:16:10	936.00	43
09:16:10	936.00	107
09:16:10	936.00	807
09:16:10	936.00	807
09:18:06	936.80	103
09:18:06	936.80	455
09:18:52	936.70	206
09:18:52	936.70	442
09:18:52	936.50	801
09:18:52	936.70	806
09:18:53	936.50	657
09:20:12	936.70	75
09:20:12	936.70	84
09:20:12	936.70	725
09:20:12	936.70	725
09:22:55	936.60	101
09:22:55	936.60	354
09:24:01	936.50	122
09:24:01	936.50	189
09:24:01	936.50	617
09:24:01	936.50	806
09:24:03	936.30	807
09:24:04	936.30	400
09:24:55	936.50	104
09:24:55	936.50	127
09:24:55	936.50	255
09:25:01	936.10	100
09:25:01	936.10	100
09:25:01	936.10	100
09:25:01	936.10	100
09:25:01	936.10	100
09:25:01	936.10	100
09:25:02	936.10	100
09:25:02	936.10	100
09:25:03	936.10	215
09:25:03	936.10	800
09:25:05	936.00	34
09:25:05	936.00	100
09:25:06	936.00	100
09:25:06	936.00	570
09:25:07	936.00	683
09:27:58	934.80	715
09:27:58	934.80	800
09:29:28	934.70	314
09:29:28	934.70	314
09:29:28	934.70	492
09:29:29	934.70	312
09:29:45	934.70	252
09:33:21	935.80	5
09:33:21	935.80	805
09:33:21	935.80	805
09:33:24	935.80	804
09:34:37	936.50	60
09:34:37	936.50	88
09:34:37	936.50	719
09:34:37	936.50	807
09:36:02	936.30	182
09:36:02	936.20	192
09:36:02	936.30	199
09:36:02	936.20	222
09:36:02	936.20	585
09:36:02	936.30	605
09:36:02	936.20	627
09:36:02	936.30	666
09:36:02	936.30	804
09:39:01	936.10	90
09:39:01	936.10	575
09:39:01	936.10	807
09:41:11	936.30	300
09:41:11	936.30	502
09:41:11	936.30	802
09:41:22	936.40	48
09:41:32	936.20	596
09:42:19	936.20	153
09:42:19	936.20	165
09:42:19	936.20	208
09:42:19	936.20	270
09:42:19	936.20	381
09:42:19	936.20	741
09:42:19	936.20	804
09:44:34	936.40	305
09:44:34	936.40	305
09:44:34	936.40	497
09:44:54	936.40	127
09:44:59	936.40	215
09:44:59	936.40	643
09:44:59	936.40	806
09:48:09	936.30	134
09:48:09	936.30	200
09:48:09	936.30	461
09:48:09	936.30	776
09:48:32	936.00	12
09:48:32	936.20	57
09:48:32	936.20	113
09:48:32	936.20	228
09:48:32	936.20	579
09:48:32	936.20	750
09:48:58	936.00	669
09:48:58	936.00	793
09:51:58	935.90	47
09:51:58	935.90	47
09:51:58	935.90	66
09:51:58	935.90	755
09:51:58	935.90	755
09:54:26	936.10	200
09:54:26	936.10	1028
09:55:38	936.60	79
09:55:38	936.60	698
09:55:38	936.60	728
09:56:14	936.30	784
09:56:14	936.30	804
09:59:10	937.20	14
09:59:10	937.20	394
09:59:10	937.20	410
09:59:10	937.20	804
10:00:26	937.10	352
10:01:00	937.20	135
10:01:00	937.20	205
10:01:00	937.20	205
10:01:00	937.20	212
10:01:00	937.20	231
10:01:00	937.20	231
10:01:00	937.20	231
10:03:21	936.50	84
10:03:21	936.50	800
10:03:21	936.50	800
10:04:01	936.30	802
10:04:02	936.30	290
10:04:08	936.30	111
10:04:08	936.30	512
10:06:05	935.60	210
10:06:05	935.60	802
10:06:05	935.60	802
10:08:18	935.30	13
10:08:18	935.30	792
10:08:18	935.30	824
10:13:05	935.20	75
10:13:05	935.20	800
10:13:05	935.20	800
10:14:04	935.10	761
10:14:04	935.10	807
10:16:03	934.50	97
10:16:03	934.50	98
10:16:03	934.50	130
10:16:03	934.50	702
10:16:03	934.50	800
10:17:45	934.00	84
10:17:45	934.00	194
10:17:45	934.00	723
10:17:45	934.00	807
10:21:09	933.20	174
10:21:09	933.20	174
10:21:09	933.20	251
10:21:09	933.20	251
10:21:09	933.20	375
10:21:09	933.20	480
10:24:06	933.50	71
10:24:06	933.50	804
10:24:06	933.50	804
10:25:07	933.50	232
10:25:07	933.50	232
10:25:07	933.50	566
10:25:07	933.50	573
10:27:57	932.50	174
10:27:57	932.50	804
10:27:57	932.50	804
10:32:08	933.70	1
10:32:08	933.70	159
10:32:08	933.70	175
10:32:08	933.50	500
10:32:08	933.70	632
10:32:08	933.70	806
10:32:09	933.50	302
10:32:09	933.50	687
10:34:02	933.70	783
10:34:02	933.70	802
10:36:00	933.70	806
10:36:01	933.70	230
10:36:01	933.70	806
10:38:00	933.70	790
10:39:24	933.80	776
10:39:30	933.80	27
10:40:05	933.80	10
10:40:14	933.70	800
10:40:42	933.70	742
10:46:53	934.20	289
10:46:53	934.20	648
10:46:53	934.20	806
10:47:32	934.10	114
10:47:32	934.10	802
10:47:32	934.10	802
10:50:16	933.60	95
10:50:16	933.60	302
10:50:16	933.60	499
10:50:16	933.60	663
10:53:05	932.90	363
10:53:05	932.90	440
10:53:05	932.90	738
10:56:25	932.80	82
10:56:25	932.80	580
10:56:25	932.80	802
10:57:39	932.70	805
10:57:41	932.70	651
11:00:00	932.50	323
11:00:00	932.50	397
11:00:00	932.50	410
11:00:00	932.50	443
11:02:49	932.80	762
11:02:49	932.80	801
11:03:18	932.40	800
11:03:30	932.40	241
11:03:30	932.40	800
11:10:57	932.90	689
11:10:57	932.90	805
11:11:23	932.80	29
11:11:23	932.80	801
11:11:23	932.80	855
11:13:39	932.70	430
11:13:39	932.70	804
11:13:41	932.70	373
11:13:44	932.60	153
11:13:44	932.60	801
11:13:44	932.60	801
11:19:19	933.20	65
11:19:19	933.20	149
11:19:19	933.20	186
11:19:19	933.20	200
11:19:19	933.20	525
11:19:19	933.20	557
11:19:19	933.20	621
11:19:19	933.20	802
11:21:25	932.40	807
11:21:31	932.40	381
11:21:31	932.40	426
11:21:36	932.40	218
11:26:00	933.20	766
11:26:00	933.20	805
11:29:27	933.20	806
11:29:27	933.20	912
11:32:17	933.00	93
11:32:17	933.00	123
11:32:17	933.00	800
11:32:17	933.00	800
11:37:34	934.20	7
11:37:34	934.20	97
11:37:34	934.20	299
11:37:34	934.20	496
11:37:34	934.20	802
11:39:46	934.80	45
11:39:46	934.80	131
11:39:46	934.80	806
11:39:46	934.80	806
11:41:10	935.30	30
11:41:10	935.30	124
11:41:10	935.30	124
11:41:10	935.30	552
11:41:10	935.30	800
11:42:41	935.30	698
11:42:41	935.30	803
11:49:00	936.10	156
11:49:00	935.80	200
11:49:00	935.80	200
11:49:00	936.10	245
11:49:00	935.80	607
11:49:00	936.10	650
11:49:00	935.80	740
11:49:00	936.10	779
11:53:02	935.80	806
11:53:08	935.80	757
11:53:33	935.60	44
11:53:33	935.60	800
11:53:33	935.60	800
11:56:38	935.50	177
11:56:38	935.50	373
11:56:38	935.50	434
11:56:38	935.50	807
11:57:54	935.70	350
11:57:54	935.70	451
11:57:54	935.70	748
12:02:01	935.50	13
12:02:01	935.50	32
12:02:01	935.50	34
12:02:01	935.50	39
12:02:01	935.50	169
12:02:01	935.50	360
12:02:07	935.60	801
12:02:16	935.60	187
12:02:16	935.60	801
12:02:18	935.50	124
12:06:19	936.30	55
12:06:43	936.40	254
12:06:43	936.40	618
12:06:51	936.30	623
12:06:51	936.30	688
12:06:51	936.30	801
12:06:51	936.30	807
12:11:09	936.40	118
12:11:24	936.30	109
12:11:24	936.30	110
12:11:24	936.30	219
12:11:24	936.30	583
12:11:24	936.30	591
12:11:24	936.30	598
12:11:24	936.30	805
12:13:21	936.40	683
12:13:21	936.40	803
12:15:16	936.10	100
12:15:16	936.10	100
12:15:16	936.10	100
12:15:16	936.10	100
12:15:16	936.10	100
12:15:16	936.10	100
12:15:17	936.10	63
12:15:17	936.10	206
12:15:17	936.10	806
12:18:42	935.80	3
12:18:42	935.80	58
12:18:42	935.80	62
12:18:42	935.80	748
12:18:42	935.80	806
12:21:53	935.30	80
12:21:53	935.30	220
12:21:53	935.30	502
12:21:53	935.30	728
12:23:54	935.60	88
12:23:54	935.60	92
12:23:54	935.60	122
12:23:54	935.60	183
12:23:54	935.60	183
12:23:54	935.60	218
12:23:54	935.60	223
12:23:54	935.60	398
12:25:07	935.20	807
12:26:10	935.20	807
12:26:12	935.20	145
12:30:03	934.60	800
12:30:05	934.60	367
12:30:05	934.60	379
12:30:13	934.60	54
12:30:55	934.60	59
12:32:23	934.60	309
12:32:23	934.60	498
12:32:23	934.60	896
12:34:14	934.00	807
12:34:20	934.00	629
12:38:33	933.40	101
12:38:33	933.40	806
12:38:33	933.40	806
12:38:34	933.30	747
12:38:41	933.30	43
12:38:41	933.30	59
12:38:41	933.30	59
12:38:41	933.30	167
12:38:41	933.30	704
12:45:24	934.00	67
12:45:24	934.10	103
12:45:24	934.10	312
12:45:24	934.00	350
12:45:24	934.00	350
12:45:24	934.10	354
12:45:24	934.10	388
12:45:24	934.10	437
12:45:24	934.00	450
12:45:24	934.00	514
12:45:24	934.10	700
12:45:24	934.10	807
12:48:23	934.00	200
12:48:23	934.00	800
12:48:23	934.00	800
12:52:09	933.90	111
12:52:09	933.90	645
12:52:09	933.90	694
12:52:45	933.60	234
12:52:45	933.60	804
12:52:45	933.60	804
12:55:06	933.90	98
12:55:06	933.90	101
12:55:06	933.90	240
12:55:06	933.90	362
12:55:06	933.90	904
12:58:50	933.20	200
12:58:50	933.20	226
12:58:50	933.20	800
12:58:51	933.20	381
12:58:51	933.20	800
12:59:25	933.20	206
12:59:25	933.20	722
13:00:17	933.00	753
13:00:17	933.00	807
13:04:40	933.20	80
13:04:40	933.20	80
13:04:40	933.20	118
13:04:40	933.20	551
13:04:40	933.20	725
13:04:52	933.20	33
13:07:44	933.50	128
13:07:44	933.50	327
13:07:44	933.50	352
13:07:44	933.50	1042
13:10:56	934.00	804
13:10:57	934.00	727
13:12:12	934.10	47
13:12:12	934.10	800
13:12:12	934.10	800
13:13:50	933.70	344
13:13:50	933.70	344
13:13:50	933.70	457
13:13:50	933.70	663
13:18:46	933.70	74
13:18:46	933.70	140
13:18:46	933.70	175
13:18:46	933.70	279
13:18:46	933.70	521
13:18:46	933.70	625
13:22:11	933.60	100
13:22:11	933.60	801
13:22:11	933.60	801
13:24:20	933.30	66
13:24:20	933.30	805
13:24:20	933.30	805
13:26:01	933.30	253
13:26:01	933.30	551
13:26:01	933.30	656
13:29:03	933.40	122
13:29:03	933.40	803
13:29:03	933.40	803
13:30:35	933.20	243
13:30:35	933.20	351
13:30:35	933.20	562
13:30:35	933.20	691
13:31:50	933.20	102
13:31:50	933.20	147
13:31:50	933.20	349
13:31:50	933.20	451
13:31:50	933.20	800
13:33:17	932.60	174
13:33:17	932.60	225
13:33:17	932.60	631
13:33:17	932.60	805
13:35:08	931.80	12
13:35:10	931.80	12
13:35:10	931.80	38
13:35:10	931.80	794
13:35:10	931.80	794
13:36:56	931.30	805
13:36:56	931.30	924
13:37:53	931.10	177
13:37:53	931.10	553
13:38:01	931.10	75
13:38:01	931.10	767
13:40:00	931.30	306
13:40:00	931.30	496
13:40:00	931.30	805
13:44:13	932.40	741
13:44:13	932.40	806
13:45:02	931.90	806
13:45:03	931.90	806
13:47:48	932.90	799
13:47:48	932.90	800
13:47:54	933.00	267
13:47:54	933.00	539
13:47:54	933.00	717
13:52:04	933.30	12
13:52:04	933.30	788
13:52:33	933.30	25
13:52:33	933.30	66
13:52:33	933.30	350
13:52:33	933.30	457
13:52:33	933.30	675
13:52:33	933.30	807
13:56:30	933.50	25
13:56:30	933.50	163
13:56:30	933.50	780
13:56:30	933.50	805
13:59:06	933.50	91
13:59:06	933.50	98
13:59:06	933.50	244
13:59:06	933.50	345
13:59:16	933.40	15
13:59:16	933.40	126
13:59:16	933.40	803
13:59:16	933.40	830
14:00:00	933.50	81
14:00:00	933.50	800
14:00:00	933.50	800
14:00:54	933.70	692
14:00:54	933.70	805
14:03:42	933.20	16
14:03:42	933.20	801
14:03:56	933.20	283
14:03:56	933.20	508
14:05:10	932.90	110
14:05:10	932.90	804
14:05:10	932.90	804
14:06:53	932.80	272
14:08:03	932.80	331
14:08:03	932.80	355
14:08:03	932.80	534
14:10:59	933.60	240
14:10:59	933.60	803
14:10:59	933.60	803
14:11:34	933.40	636
14:11:34	933.40	807
14:16:00	933.80	801
14:16:01	933.80	89
14:16:01	933.70	233
14:16:01	933.80	801
14:16:01	933.70	806
14:16:01	933.70	806
14:19:20	933.70	54
14:19:20	933.70	293
14:19:20	933.70	455
14:19:50	933.70	664
14:21:13	934.00	806
14:21:14	934.00	801
14:23:54	933.80	343
14:23:54	933.80	460
14:23:54	933.80	699
14:23:54	933.80	805
14:23:54	933.80	806
14:26:30	933.50	224
14:26:30	933.50	352
14:26:30	933.50	450
14:26:30	933.50	802
14:28:33	933.30	239
14:28:33	933.30	802
14:28:33	933.30	802
14:29:26	933.10	94
14:29:26	933.10	763
14:29:26	933.10	800
14:31:04	933.60	61
14:31:04	933.60	202
14:31:04	933.60	600
14:31:04	933.60	802
14:31:04	933.40	803
14:31:04	933.40	867
14:31:20	933.50	195
14:31:20	933.50	229
14:31:20	933.50	606
14:31:20	933.50	801
14:31:56	933.80	87
14:31:56	933.80	806
14:31:56	933.80	806
14:32:08	933.50	631
14:32:08	933.50	802
14:32:32	933.50	66
14:33:09	933.40	106
14:33:09	933.40	180
14:33:09	933.40	695
14:33:09	933.40	801
14:34:33	933.70	44
14:34:33	933.70	763
14:34:33	933.70	826
14:35:21	934.00	34
14:35:21	934.00	101
14:35:21	934.00	800
14:35:21	934.00	800
14:35:21	934.00	804
14:35:21	934.00	804
14:36:37	932.90	63
14:36:37	932.90	800
14:36:37	932.90	800
14:36:39	932.90	746
14:36:39	932.90	804
14:38:17	933.00	805
14:38:18	933.00	205
14:38:18	933.00	805
14:38:59	932.90	805
14:39:46	933.00	196
14:39:46	933.00	215
14:39:46	933.00	590
14:39:46	933.00	704
14:39:46	933.00	802
14:40:37	932.70	578
14:41:45	933.20	16
14:41:45	933.20	803
14:41:53	933.20	320
14:41:53	933.20	791
14:42:01	933.20	807
14:42:46	933.20	1
14:42:55	933.20	806
14:42:57	933.20	30
14:42:57	933.20	806
14:44:56	933.80	681
14:44:56	933.80	803
14:45:22	933.70	84
14:45:22	933.70	800
14:45:36	933.70	216
14:45:49	933.70	489
14:47:32	933.40	4
14:47:32	933.40	8
14:47:32	933.40	29
14:47:32	933.40	37
14:47:32	933.40	106
14:47:32	933.40	148
14:47:32	933.40	199
14:47:32	933.40	253
14:47:32	933.40	350
14:47:32	933.40	766
14:47:32	933.40	802
14:47:32	933.40	803
14:49:08	933.40	322
14:49:08	933.40	467
14:49:08	933.40	807
14:49:42	933.30	234
14:49:42	933.30	566
14:49:42	933.30	724
14:51:34	933.60	730
14:51:34	933.60	800
14:52:34	933.60	47
14:52:34	933.60	84
14:52:34	933.60	117
14:52:34	933.60	123
14:52:34	933.60	175
14:52:34	933.60	240
14:52:34	933.60	389
14:52:34	933.60	802
14:52:34	933.60	802
14:52:34	933.60	804
14:55:52	934.30	49
14:55:52	934.30	49
14:55:52	934.30	78
14:55:52	934.30	179
14:55:52	934.30	243
14:55:52	934.30	500
14:55:52	934.30	686
14:55:52	934.30	752
14:55:52	934.30	806
14:56:13	934.20	722
14:56:13	934.20	801
14:57:33	933.70	127
14:57:33	933.70	322
14:57:33	933.70	483
14:57:33	933.70	721
15:00:16	934.60	100
15:00:16	934.60	205
15:00:16	934.60	256
15:00:16	934.60	466
15:00:16	934.60	584
15:00:16	934.60	704
15:00:16	934.60	802
15:00:58	935.10	182
15:00:58	935.10	805
15:00:58	935.10	805
15:01:02	934.90	33
15:01:02	934.90	802
15:01:21	935.00	116
15:01:21	935.00	802
15:02:39	934.60	523
15:02:40	934.60	277
15:02:40	934.60	295
15:02:40	934.60	359
15:03:30	934.60	136
15:03:30	934.60	151
15:03:31	934.60	514
15:03:31	934.60	801
15:03:33	934.60	120
15:04:24	934.50	803
15:04:25	934.50	800
15:05:34	934.90	152
15:05:34	934.90	269
15:05:47	934.90	68
15:05:47	934.90	124
15:05:47	934.90	386
15:05:47	934.90	636
15:07:32	935.00	800
15:07:33	935.00	710
15:07:50	935.30	375
15:07:50	935.30	375
15:07:50	935.30	426
15:07:52	935.30	358
15:08:14	935.00	124
15:08:14	935.00	274
15:08:14	935.00	350
15:08:14	935.00	807
15:10:35	935.50	767
15:10:35	935.50	806
15:12:08	935.80	200
15:12:08	935.80	216
15:12:08	935.80	602
15:12:08	935.80	802
15:12:35	935.80	773
15:12:35	935.80	800
15:14:28	935.50	93
15:14:28	935.50	226
15:14:28	935.50	348
15:14:28	935.50	806
15:15:34	935.40	245
15:15:34	935.40	279
15:15:34	935.40	527
15:15:34	935.40	806
15:16:43	935.00	157
15:16:43	935.00	160
15:16:43	935.00	467
15:16:43	935.00	800
15:17:48	934.80	807
15:18:37	935.00	801
15:19:36	935.00	172
15:19:36	935.00	807
15:19:36	935.00	807
15:20:36	935.20	160
15:20:36	935.20	800
15:20:36	935.20	800
15:23:31	935.40	675
15:23:31	935.40	805
15:24:00	935.20	85
15:24:00	935.20	173
15:24:00	935.20	262
15:24:00	935.20	319
15:24:00	935.20	721
15:24:35	935.00	799
15:24:36	935.00	1
15:24:36	935.00	651
15:26:01	935.00	139
15:26:01	935.00	293
15:26:01	935.00	495
15:26:01	935.00	667
15:28:29	935.10	726
15:28:29	935.10	803
15:28:57	935.00	1
15:28:57	935.00	102
15:28:57	935.00	700
15:29:03	935.00	182
15:29:03	935.00	803
15:29:40	934.70	62
15:29:40	934.70	198
15:29:40	934.70	545
15:29:40	934.70	545
15:30:57	935.00	121
15:30:57	935.00	804
15:30:57	935.00	804
15:32:19	935.10	673
15:32:19	935.10	801
15:34:07	934.70	275
15:34:07	934.90	797
15:34:07	934.90	805
15:34:07	934.90	806
15:34:07	934.90	838
15:36:01	934.90	712
15:36:01	934.90	803
15:36:49	935.00	87
15:36:49	935.00	806
15:36:49	935.00	806
15:37:42	935.00	752
15:37:42	935.00	801
15:39:58	935.10	66
15:39:58	935.10	110
15:39:58	935.10	546
15:39:58	935.10	804
15:39:58	935.10	804
15:39:58	935.10	806
15:41:58	934.90	101
15:41:58	934.90	102
15:41:58	934.90	700
15:41:58	934.90	802
15:42:58	935.00	666
15:42:58	935.00	804
15:43:53	934.90	157
15:43:53	934.90	649
15:43:53	934.90	955
15:45:56	935.00	172
15:45:56	935.00	802
15:45:56	935.00	802
15:47:43	935.00	800
15:48:15	935.00	90
15:48:15	935.00	216
15:48:15	935.00	584
15:48:15	935.00	743
15:48:15	935.00	802
15:48:55	934.90	807
15:48:56	934.90	789
15:50:26	934.80	803
15:50:28	934.80	767
15:52:12	934.80	764
15:52:12	934.80	804
15:52:45	934.80	260
15:52:45	934.80	365
15:53:35	934.90	76
15:53:35	934.90	803
15:54:14	934.90	64
15:54:14	934.90	804
15:54:14	934.90	804
15:55:18	934.70	803
15:55:20	934.70	380
15:55:20	934.70	394
15:55:21	934.70	22
15:55:21	934.70	29
15:56:15	934.70	146
15:56:15	934.70	659
15:56:15	934.70	776
15:57:07	934.80	801
15:57:08	934.80	236
15:57:08	934.80	801
15:57:09	934.80	1
15:58:17	934.90	804
15:58:44	934.90	423
15:58:46	934.90	294
15:59:02	934.90	21
15:59:48	934.90	66
15:59:48	934.90	81
15:59:48	934.90	469
15:59:48	934.90	802
16:02:42	935.10	45
16:02:42	935.10	804
16:02:42	935.10	804
16:04:20	935.00	104
16:04:20	935.00	117
16:04:20	935.00	386
16:04:20	935.00	421
16:04:20	935.00	421
16:04:20	935.00	1791
16:05:12	935.30	225
16:05:12	935.30	580
16:05:12	935.30	581
16:05:17	935.30	213
16:05:26	935.30	40
16:05:26	935.30	53
16:05:26	935.30	370
16:05:26	935.30	760
16:05:36	935.30	90
16:05:36	935.30	430
16:06:09	935.20	288
16:06:09	935.20	700
16:06:09	935.20	738
16:06:09	935.20	1637
16:06:52	935.00	803
16:06:52	935.00	803
16:06:54	935.00	68
16:06:55	935.00	2
16:07:07	934.90	97
16:07:07	934.90	564
16:07:42	934.70	806
16:07:50	934.70	778
16:08:34	934.80	213
16:08:34	934.80	213
16:08:34	934.80	337
16:08:35	934.80	38
16:08:35	934.80	153
16:08:37	934.80	19
16:08:37	934.80	782
16:08:38	934.80	95
16:09:45	934.70	720
16:09:45	934.70	804
16:10:35	934.70	800
16:12:01	934.70	213
16:13:54	934.70	92
16:14:02	934.80	87
16:14:02	934.80	95
16:14:02	934.80	354
16:14:02	934.80	716
16:14:02	934.80	717
16:14:13	934.80	357
16:14:15	934.80	252
16:14:16	934.80	62
16:14:16	934.80	193
16:14:18	934.80	710
16:14:24	934.80	69
16:14:24	934.80	92
16:14:35	934.80	24
16:14:35	934.80	147
16:14:35	934.80	782
16:14:36	934.80	661
16:14:58	934.80	97
16:14:58	934.80	123
16:14:58	934.80	679
16:14:59	934.70	131
16:14:59	934.70	135
16:14:59	934.80	329
16:14:59	934.80	351
16:14:59	934.70	406
16:14:59	934.70	436
16:14:59	934.70	802
16:16:01	934.60	806
16:16:21	934.70	421
16:16:34	934.70	213
16:16:38	934.70	93
16:16:38	934.70	93
16:16:38	934.70	172
16:16:38	934.70	220
16:16:38	934.70	714
16:16:38	934.70	807
16:17:25	934.60	336
16:17:25	934.60	468
16:17:25	934.60	663
16:18:49	934.90	124
16:18:49	934.90	134
16:18:49	934.90	177
16:18:49	934.90	210
16:18:49	934.90	493
16:18:49	934.90	801
16:18:49	934.90	801
16:18:49	934.90	804
16:19:42	934.70	53
16:19:42	934.70	673
16:19:42	934.70	802
16:19:42	934.70	1439
16:20:36	934.60	324
16:20:43	934.70	595
16:20:43	934.70	803
16:20:52	934.70	90
16:20:52	934.70	710
16:20:53	934.70	532
16:21:59	935.20	159
16:21:59	935.20	286
16:21:59	935.20	358
16:22:24	935.20	500
16:22:44	935.20	185
16:23:00	935.20	54
16:23:00	935.20	60
16:23:00	935.20	75
16:23:00	935.20	367
16:23:00	935.20	436
16:23:00	935.20	770
16:23:00	935.20	803
16:23:00	935.20	807
16:24:34	935.00	305
16:24:34	935.00	500
16:24:42	935.00	114
16:24:42	935.00	784
16:24:42	935.00	801
16:24:42	935.00	801
16:24:57	935.00	648
16:25:23	935.40	58
16:25:23	935.40	85
16:25:23	935.40	228
16:25:23	935.40	517
16:25:23	935.40	578
16:25:30	935.20	290
16:25:30	935.20	515
16:25:39	935.20	203
16:25:59	935.20	550
16:25:59	935.20	663
16:25:59	935.20	1025
16:26:32	935.30	83
16:26:32	935.20	227
16:26:32	935.30	400
16:26:32	935.20	462
16:26:32	935.30	466
16:26:32	935.30	470
16:26:32	935.30	550
16:26:32	935.30	673
16:26:32	935.30	675
16:26:32	935.20	747
16:26:32	935.30	800
16:27:03	934.70	268
16:27:07	934.70	17
16:27:39	934.50	370
16:27:39	934.50	599
16:27:39	934.50	747
16:27:39	934.50	753

This announcement will also be available on National Grid's website at http://investors.nationalgrid.com/rns.aspx.

Enquiries to:

C James, Company Secretarial Assistant, (0207 004 3116).

This information is provided by RNS

The company news service from the London Stock Exchange

END

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