Transaction in Own Shares
15 May 2025
IMI plc ("IMI" or the "Company")
Transactions in own shares
LEI: 2138002W9Q21PF751R30
IMI announces that on 14 May 2025 it purchased through Numis Securities Limited ("Deutsche Numis") the following number of its ordinary shares for cancellation at an average price of 1,924.3954 pence per share:
|
Date of purchase: |
14 May 2025 |
|
Number of ordinary shares purchased: |
91,321 |
|
Highest purchase price paid per share: |
1,935.00p |
|
Lowest purchase price paid per share: |
1,901.00p |
|
Volume weighted average price paid per share: |
1,924.3954p |
Following settlement of the above purchases and cancellation of the purchased ordinary shares, the Company's total number of ordinary shares in issue shall be 265,184,807. The Company holds 12,648,836 ordinary shares in treasury and therefore the total number of voting rights in the Company will be 252,535,971.
Aggregate information:
|
Venue |
Weighted average price paid per share (GBp) |
Aggregate number of shares purchased |
|
London Stock Exchange |
1924.1187 |
58,793 |
|
Chi-X (CXE) |
1924.8431 |
14,692 |
|
BATS (BXE) |
1924.9386 |
17,836 |
Transaction Details
In accordance with Article 5(1)(b) of the Market Abuse Regulation (EU) No 596/2014 as it forms part of UK law, a full breakdown of the individual trades made by Deutsche Numis on behalf of the Company as part of the Programme is detailed below:
|
Number of ordinary shares purchased |
Transaction price |
Time of transaction (UK Time) |
Transaction reference number |
Trading venue |
|
109 |
1913.00 |
08:16:26 |
00075334692TRLO0 |
XLON |
|
533 |
1913.00 |
08:17:04 |
00075334733TRLO0 |
XLON |
|
34 |
1912.00 |
08:17:10 |
00075334738TRLO0 |
XLON |
|
442 |
1912.00 |
08:17:10 |
00075334739TRLO0 |
XLON |
|
275 |
1906.00 |
08:28:05 |
00075335560TRLO0 |
XLON |
|
228 |
1906.00 |
08:28:05 |
00075335561TRLO0 |
XLON |
|
210 |
1905.00 |
08:28:46 |
00075335574TRLO0 |
XLON |
|
315 |
1905.00 |
08:28:46 |
00075335575TRLO0 |
XLON |
|
443 |
1907.00 |
08:36:18 |
00075335880TRLO0 |
XLON |
|
545 |
1901.00 |
08:43:35 |
00075337018TRLO0 |
XLON |
|
259 |
1905.00 |
08:58:47 |
00075337809TRLO0 |
XLON |
|
210 |
1905.00 |
08:58:47 |
00075337810TRLO0 |
XLON |
|
626 |
1906.00 |
09:03:20 |
00075338044TRLO0 |
CHIX |
|
440 |
1906.00 |
09:03:20 |
00075338045TRLO0 |
XLON |
|
495 |
1905.00 |
09:05:04 |
00075338238TRLO0 |
XLON |
|
455 |
1908.00 |
09:15:56 |
00075338694TRLO0 |
XLON |
|
49 |
1910.00 |
09:25:55 |
00075339337TRLO0 |
BATE |
|
623 |
1910.00 |
09:31:22 |
00075339614TRLO0 |
CHIX |
|
582 |
1910.00 |
09:31:22 |
00075339615TRLO0 |
BATE |
|
638 |
1910.00 |
09:31:22 |
00075339616TRLO0 |
BATE |
|
546 |
1910.00 |
09:31:22 |
00075339617TRLO0 |
XLON |
|
587 |
1912.00 |
09:40:19 |
00075340112TRLO0 |
XLON |
|
514 |
1912.00 |
09:40:19 |
00075340113TRLO0 |
BATE |
|
535 |
1912.00 |
09:40:19 |
00075340114TRLO0 |
CHIX |
|
72 |
1912.00 |
09:40:19 |
00075340115TRLO0 |
BATE |
|
546 |
1913.00 |
09:44:17 |
00075340216TRLO0 |
XLON |
|
530 |
1912.00 |
09:46:51 |
00075340409TRLO0 |
XLON |
|
183 |
1911.00 |
09:47:43 |
00075340552TRLO0 |
XLON |
|
323 |
1911.00 |
09:47:43 |
00075340553TRLO0 |
XLON |
|
539 |
1911.00 |
09:47:51 |
00075340554TRLO0 |
BATE |
|
12 |
1911.00 |
09:47:51 |
00075340555TRLO0 |
BATE |
|
199 |
1911.00 |
09:54:30 |
00075341039TRLO0 |
XLON |
|
333 |
1911.00 |
09:54:30 |
00075341040TRLO0 |
XLON |
|
312 |
1910.00 |
09:56:34 |
00075341146TRLO0 |
XLON |
|
191 |
1910.00 |
09:56:34 |
00075341147TRLO0 |
XLON |
|
530 |
1909.00 |
10:02:07 |
00075341389TRLO0 |
BATE |
|
358 |
1909.00 |
10:02:07 |
00075341390TRLO0 |
CHIX |
|
100 |
1909.00 |
10:02:07 |
00075341391TRLO0 |
CHIX |
|
454 |
1909.00 |
10:02:07 |
00075341392TRLO0 |
XLON |
|
158 |
1909.00 |
10:02:07 |
00075341393TRLO0 |
CHIX |
|
162 |
1908.00 |
10:09:06 |
00075341879TRLO0 |
XLON |
|
301 |
1908.00 |
10:09:06 |
00075341880TRLO0 |
XLON |
|
158 |
1906.00 |
10:09:46 |
00075341914TRLO0 |
XLON |
|
362 |
1906.00 |
10:09:46 |
00075341915TRLO0 |
XLON |
|
545 |
1910.00 |
10:13:58 |
00075342657TRLO0 |
XLON |
|
578 |
1910.00 |
10:16:48 |
00075342876TRLO0 |
CHIX |
|
549 |
1910.00 |
10:16:48 |
00075342877TRLO0 |
BATE |
|
545 |
1910.00 |
10:16:48 |
00075342878TRLO0 |
XLON |
|
480 |
1910.00 |
10:16:48 |
00075342879TRLO0 |
XLON |
|
509 |
1914.00 |
10:25:06 |
00075343302TRLO0 |
XLON |
|
350 |
1914.00 |
10:25:11 |
00075343309TRLO0 |
XLON |
|
105 |
1914.00 |
10:25:11 |
00075343310TRLO0 |
XLON |
|
470 |
1913.00 |
10:25:27 |
00075343312TRLO0 |
XLON |
|
518 |
1915.00 |
10:32:18 |
00075343682TRLO0 |
XLON |
|
475 |
1915.00 |
10:32:18 |
00075343683TRLO0 |
XLON |
|
70 |
1915.00 |
10:33:55 |
00075343728TRLO0 |
CHIX |
|
358 |
1915.00 |
10:33:55 |
00075343729TRLO0 |
CHIX |
|
473 |
1915.00 |
10:33:55 |
00075343730TRLO0 |
XLON |
|
116 |
1915.00 |
10:33:57 |
00075343732TRLO0 |
BATE |
|
189 |
1915.00 |
10:35:00 |
00075343783TRLO0 |
BATE |
|
549 |
1919.00 |
10:51:50 |
00075344874TRLO0 |
BATE |
|
572 |
1919.00 |
10:51:50 |
00075344875TRLO0 |
CHIX |
|
634 |
1919.00 |
10:51:50 |
00075344876TRLO0 |
XLON |
|
497 |
1919.00 |
10:51:50 |
00075344877TRLO0 |
XLON |
|
544 |
1918.00 |
10:51:54 |
00075344878TRLO0 |
XLON |
|
531 |
1918.00 |
10:51:55 |
00075344879TRLO0 |
BATE |
|
467 |
1917.00 |
10:53:38 |
00075344913TRLO0 |
XLON |
|
429 |
1918.00 |
10:58:00 |
00075345008TRLO0 |
XLON |
|
107 |
1918.00 |
10:58:00 |
00075345009TRLO0 |
XLON |
|
524 |
1917.00 |
11:00:05 |
00075345081TRLO0 |
XLON |
|
515 |
1916.00 |
11:03:58 |
00075345140TRLO0 |
XLON |
|
568 |
1916.00 |
11:04:01 |
00075345141TRLO0 |
BATE |
|
172 |
1917.00 |
11:23:21 |
00075345476TRLO0 |
XLON |
|
552 |
1917.00 |
11:23:21 |
00075345477TRLO0 |
XLON |
|
410 |
1917.00 |
11:23:21 |
00075345479TRLO0 |
XLON |
|
100 |
1917.00 |
11:23:21 |
00075345480TRLO0 |
XLON |
|
21 |
1916.00 |
11:23:33 |
00075345487TRLO0 |
BATE |
|
441 |
1916.00 |
11:23:33 |
00075345488TRLO0 |
XLON |
|
407 |
1916.00 |
11:23:33 |
00075345489TRLO0 |
XLON |
|
41 |
1916.00 |
11:23:33 |
00075345490TRLO0 |
XLON |
|
622 |
1916.00 |
11:24:34 |
00075345511TRLO0 |
CHIX |
|
403 |
1916.00 |
11:24:34 |
00075345512TRLO0 |
BATE |
|
162 |
1916.00 |
11:24:38 |
00075345513TRLO0 |
BATE |
|
90 |
1915.00 |
11:29:51 |
00075345681TRLO0 |
XLON |
|
352 |
1915.00 |
11:29:51 |
00075345682TRLO0 |
XLON |
|
583 |
1916.00 |
11:37:12 |
00075345883TRLO0 |
CHIX |
|
478 |
1916.00 |
11:37:12 |
00075345884TRLO0 |
XLON |
|
68 |
1916.00 |
11:37:12 |
00075345885TRLO0 |
XLON |
|
516 |
1922.00 |
11:56:15 |
00075346588TRLO0 |
XLON |
|
634 |
1922.00 |
11:56:15 |
00075346589TRLO0 |
XLON |
|
43 |
1921.00 |
11:59:53 |
00075346679TRLO0 |
BATE |
|
593 |
1921.00 |
11:59:53 |
00075346680TRLO0 |
CHIX |
|
99 |
1921.00 |
11:59:53 |
00075346681TRLO0 |
BATE |
|
510 |
1921.00 |
11:59:53 |
00075346682TRLO0 |
XLON |
|
500 |
1921.00 |
11:59:53 |
00075346683TRLO0 |
BATE |
|
591 |
1923.00 |
12:12:17 |
00075347073TRLO0 |
XLON |
|
540 |
1923.00 |
12:12:17 |
00075347074TRLO0 |
XLON |
|
200 |
1925.00 |
12:23:28 |
00075347672TRLO0 |
XLON |
|
644 |
1925.00 |
12:23:28 |
00075347673TRLO0 |
CHIX |
|
180 |
1925.00 |
12:23:28 |
00075347674TRLO0 |
XLON |
|
284 |
1925.00 |
12:23:28 |
00075347675TRLO0 |
XLON |
|
544 |
1925.00 |
12:29:30 |
00075348636TRLO0 |
BATE |
|
93 |
1925.00 |
12:29:30 |
00075348637TRLO0 |
BATE |
|
436 |
1925.00 |
12:29:30 |
00075348638TRLO0 |
BATE |
|
492 |
1925.00 |
12:29:30 |
00075348639TRLO0 |
XLON |
|
491 |
1925.00 |
12:29:30 |
00075348640TRLO0 |
XLON |
|
520 |
1924.00 |
12:29:40 |
00075348647TRLO0 |
XLON |
|
629 |
1926.00 |
12:40:25 |
00075349072TRLO0 |
BATE |
|
527 |
1926.00 |
12:40:25 |
00075349073TRLO0 |
XLON |
|
479 |
1925.00 |
12:47:33 |
00075349328TRLO0 |
XLON |
|
535 |
1925.00 |
12:47:33 |
00075349327TRLO0 |
CHIX |
|
56 |
1924.00 |
12:57:03 |
00075349627TRLO0 |
XLON |
|
43 |
1924.00 |
12:57:03 |
00075349628TRLO0 |
XLON |
|
171 |
1924.00 |
12:57:03 |
00075349629TRLO0 |
XLON |
|
120 |
1924.00 |
12:57:03 |
00075349630TRLO0 |
XLON |
|
106 |
1923.00 |
12:57:21 |
00075349656TRLO0 |
BATE |
|
335 |
1923.00 |
12:57:22 |
00075349657TRLO0 |
BATE |
|
171 |
1923.00 |
12:57:22 |
00075349658TRLO0 |
BATE |
|
486 |
1922.00 |
12:59:48 |
00075349746TRLO0 |
XLON |
|
776 |
1927.00 |
13:14:25 |
00075350278TRLO0 |
XLON |
|
533 |
1927.00 |
13:14:25 |
00075350279TRLO0 |
XLON |
|
114 |
1927.00 |
13:14:25 |
00075350280TRLO0 |
XLON |
|
150 |
1934.00 |
13:27:47 |
00075350772TRLO0 |
XLON |
|
172 |
1934.00 |
13:27:47 |
00075350773TRLO0 |
XLON |
|
1014 |
1934.00 |
13:27:47 |
00075350774TRLO0 |
XLON |
|
556 |
1933.00 |
13:28:20 |
00075350800TRLO0 |
CHIX |
|
542 |
1933.00 |
13:28:20 |
00075350801TRLO0 |
BATE |
|
467 |
1933.00 |
13:28:20 |
00075350802TRLO0 |
XLON |
|
644 |
1935.00 |
13:36:40 |
00075351152TRLO0 |
CHIX |
|
419 |
1935.00 |
13:36:40 |
00075351153TRLO0 |
BATE |
|
108 |
1935.00 |
13:36:40 |
00075351154TRLO0 |
BATE |
|
605 |
1935.00 |
13:36:40 |
00075351155TRLO0 |
XLON |
|
457 |
1935.00 |
13:36:40 |
00075351156TRLO0 |
XLON |
|
219 |
1935.00 |
13:36:40 |
00075351157TRLO0 |
XLON |
|
312 |
1935.00 |
13:36:40 |
00075351158TRLO0 |
XLON |
|
10 |
1935.00 |
13:36:40 |
00075351159TRLO0 |
XLON |
|
538 |
1935.00 |
14:00:50 |
00075352527TRLO0 |
CHIX |
|
441 |
1935.00 |
14:00:50 |
00075352528TRLO0 |
XLON |
|
612 |
1935.00 |
14:00:50 |
00075352529TRLO0 |
BATE |
|
275 |
1935.00 |
14:00:50 |
00075352530TRLO0 |
XLON |
|
627 |
1935.00 |
14:00:50 |
00075352531TRLO0 |
BATE |
|
522 |
1935.00 |
14:00:50 |
00075352532TRLO0 |
XLON |
|
251 |
1935.00 |
14:00:50 |
00075352533TRLO0 |
XLON |
|
467 |
1935.00 |
14:00:50 |
00075352534TRLO0 |
XLON |
|
507 |
1935.00 |
14:00:50 |
00075352535TRLO0 |
XLON |
|
23 |
1935.00 |
14:00:50 |
00075352536TRLO0 |
XLON |
|
441 |
1935.00 |
14:00:50 |
00075352537TRLO0 |
XLON |
|
157 |
1935.00 |
14:00:50 |
00075352538TRLO0 |
XLON |
|
381 |
1935.00 |
14:00:50 |
00075352539TRLO0 |
XLON |
|
492 |
1935.00 |
14:00:50 |
00075352540TRLO0 |
XLON |
|
543 |
1935.00 |
14:00:50 |
00075352541TRLO0 |
XLON |
|
116 |
1935.00 |
14:00:50 |
00075352546TRLO0 |
XLON |
|
283 |
1935.00 |
14:00:50 |
00075352547TRLO0 |
XLON |
|
80 |
1935.00 |
14:00:50 |
00075352548TRLO0 |
XLON |
|
82 |
1935.00 |
14:00:50 |
00075352549TRLO0 |
XLON |
|
222 |
1935.00 |
14:00:50 |
00075352550TRLO0 |
XLON |
|
514 |
1934.00 |
14:01:45 |
00075352636TRLO0 |
XLON |
|
391 |
1934.00 |
14:01:45 |
00075352637TRLO0 |
CHIX |
|
239 |
1934.00 |
14:01:45 |
00075352638TRLO0 |
CHIX |
|
634 |
1934.00 |
14:05:05 |
00075352903TRLO0 |
BATE |
|
58 |
1934.00 |
14:12:28 |
00075353326TRLO0 |
XLON |
|
160 |
1934.00 |
14:12:28 |
00075353327TRLO0 |
XLON |
|
100 |
1935.00 |
14:20:33 |
00075353645TRLO0 |
BATE |
|
65 |
1935.00 |
14:21:22 |
00075353724TRLO0 |
BATE |
|
539 |
1935.00 |
14:23:15 |
00075353860TRLO0 |
CHIX |
|
394 |
1935.00 |
14:23:15 |
00075353861TRLO0 |
BATE |
|
50 |
1935.00 |
14:23:15 |
00075353862TRLO0 |
XLON |
|
203 |
1935.00 |
14:23:15 |
00075353863TRLO0 |
XLON |
|
100 |
1935.00 |
14:23:15 |
00075353864TRLO0 |
XLON |
|
574 |
1935.00 |
14:23:15 |
00075353865TRLO0 |
XLON |
|
251 |
1935.00 |
14:23:15 |
00075353866TRLO0 |
XLON |
|
48 |
1935.00 |
14:23:15 |
00075353867TRLO0 |
XLON |
|
641 |
1935.00 |
14:30:28 |
00075354177TRLO0 |
CHIX |
|
579 |
1935.00 |
14:30:28 |
00075354178TRLO0 |
BATE |
|
473 |
1935.00 |
14:30:28 |
00075354179TRLO0 |
XLON |
|
473 |
1935.00 |
14:30:28 |
00075354180TRLO0 |
XLON |
|
490 |
1935.00 |
14:30:28 |
00075354181TRLO0 |
XLON |
|
1 |
1935.00 |
14:31:00 |
00075354206TRLO0 |
XLON |
|
440 |
1935.00 |
14:31:54 |
00075354243TRLO0 |
XLON |
|
572 |
1935.00 |
14:31:54 |
00075354242TRLO0 |
CHIX |
|
505 |
1935.00 |
14:32:07 |
00075354276TRLO0 |
XLON |
|
443 |
1935.00 |
14:32:07 |
00075354277TRLO0 |
XLON |
|
21 |
1935.00 |
14:32:07 |
00075354279TRLO0 |
XLON |
|
146 |
1934.00 |
14:33:20 |
00075354352TRLO0 |
BATE |
|
583 |
1935.00 |
14:35:40 |
00075354464TRLO0 |
CHIX |
|
590 |
1935.00 |
14:35:40 |
00075354465TRLO0 |
BATE |
|
528 |
1935.00 |
14:35:40 |
00075354466TRLO0 |
XLON |
|
465 |
1934.00 |
14:36:32 |
00075354530TRLO0 |
BATE |
|
513 |
1934.00 |
14:36:32 |
00075354531TRLO0 |
XLON |
|
513 |
1934.00 |
14:39:21 |
00075354673TRLO0 |
XLON |
|
588 |
1933.00 |
14:41:40 |
00075354791TRLO0 |
BATE |
|
551 |
1933.00 |
14:41:40 |
00075354792TRLO0 |
XLON |
|
653 |
1933.00 |
14:41:40 |
00075354793TRLO0 |
CHIX |
|
123 |
1932.00 |
14:41:41 |
00075354798TRLO0 |
XLON |
|
394 |
1932.00 |
14:41:41 |
00075354799TRLO0 |
XLON |
|
499 |
1931.00 |
14:43:31 |
00075354920TRLO0 |
XLON |
|
24 |
1931.00 |
14:44:18 |
00075354956TRLO0 |
BATE |
|
101 |
1931.00 |
14:44:21 |
00075354957TRLO0 |
BATE |
|
438 |
1931.00 |
14:44:49 |
00075354996TRLO0 |
BATE |
|
70 |
1931.00 |
14:44:49 |
00075354997TRLO0 |
BATE |
|
505 |
1930.00 |
14:47:53 |
00075355257TRLO0 |
XLON |
|
620 |
1930.00 |
14:47:53 |
00075355256TRLO0 |
CHIX |
|
504 |
1929.00 |
14:48:23 |
00075355293TRLO0 |
XLON |
|
439 |
1931.00 |
14:50:08 |
00075355372TRLO0 |
XLON |
|
613 |
1930.00 |
14:53:42 |
00075355617TRLO0 |
BATE |
|
493 |
1930.00 |
14:53:42 |
00075355618TRLO0 |
XLON |
|
551 |
1928.00 |
14:53:55 |
00075355636TRLO0 |
XLON |
|
539 |
1929.00 |
15:00:00 |
00075355979TRLO0 |
XLON |
|
489 |
1930.00 |
15:00:37 |
00075356070TRLO0 |
XLON |
|
262 |
1930.00 |
15:00:37 |
00075356071TRLO0 |
XLON |
|
109 |
1930.00 |
15:00:37 |
00075356072TRLO0 |
XLON |
|
76 |
1930.00 |
15:00:37 |
00075356073TRLO0 |
XLON |
|
806 |
1930.00 |
15:01:37 |
00075356133TRLO0 |
XLON |
|
77 |
1930.00 |
15:01:37 |
00075356134TRLO0 |
XLON |
|
672 |
1932.00 |
15:05:25 |
00075356406TRLO0 |
XLON |
|
1091 |
1932.00 |
15:05:25 |
00075356407TRLO0 |
XLON |
|
459 |
1932.00 |
15:06:26 |
00075356555TRLO0 |
XLON |
|
494 |
1933.00 |
15:08:09 |
00075356677TRLO0 |
XLON |
|
36 |
1933.00 |
15:08:09 |
00075356678TRLO0 |
XLON |
|
74 |
1933.00 |
15:08:09 |
00075356679TRLO0 |
XLON |
|
565 |
1933.00 |
15:09:45 |
00075356813TRLO0 |
CHIX |
|
565 |
1933.00 |
15:09:45 |
00075356814TRLO0 |
BATE |
|
581 |
1933.00 |
15:09:45 |
00075356815TRLO0 |
BATE |
|
501 |
1933.00 |
15:09:45 |
00075356816TRLO0 |
XLON |
|
607 |
1933.00 |
15:09:45 |
00075356817TRLO0 |
CHIX |
|
540 |
1933.00 |
15:09:45 |
00075356818TRLO0 |
XLON |
|
343 |
1932.00 |
15:09:49 |
00075356824TRLO0 |
XLON |
|
180 |
1932.00 |
15:09:49 |
00075356825TRLO0 |
XLON |
|
543 |
1930.00 |
15:10:10 |
00075356848TRLO0 |
XLON |
|
595 |
1929.00 |
15:11:56 |
00075357034TRLO0 |
BATE |
|
589 |
1929.00 |
15:11:56 |
00075357035TRLO0 |
CHIX |
|
435 |
1929.00 |
15:17:08 |
00075357430TRLO0 |
XLON |
|
60 |
1929.00 |
15:17:10 |
00075357431TRLO0 |
XLON |
|
105 |
1930.00 |
15:18:57 |
00075357546TRLO0 |
XLON |
|
57 |
1930.00 |
15:18:57 |
00075357547TRLO0 |
XLON |
|
295 |
1930.00 |
15:19:00 |
00075357558TRLO0 |
XLON |
|
86 |
1930.00 |
15:19:00 |
00075357559TRLO0 |
XLON |
|
84 |
1930.00 |
15:19:00 |
00075357560TRLO0 |
XLON |
|
80 |
1930.00 |
15:19:00 |
00075357561TRLO0 |
XLON |
|
1 |
1931.00 |
15:21:51 |
00075357724TRLO0 |
XLON |
|
484 |
1931.00 |
15:22:24 |
00075357773TRLO0 |
XLON |
|
514 |
1931.00 |
15:22:24 |
00075357774TRLO0 |
XLON |
|
86 |
1933.00 |
15:25:53 |
00075357997TRLO0 |
XLON |
|
85 |
1933.00 |
15:25:53 |
00075357998TRLO0 |
XLON |
|
160 |
1933.00 |
15:25:53 |
00075357999TRLO0 |
XLON |
|
123 |
1933.00 |
15:25:53 |
00075358000TRLO0 |
XLON |
Enquiries:
IMI plc
Louise Waldek, Company Secretary
0121 717 3700
RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy.
Latest directors dealings
- 9 hours ago Compass Group
- 9 hours ago Rathbones Group
- 10 hours ago Sage Group
- 10 hours ago NATWEST GROUP
- 11 hours ago Kier Group