| 17/10/22 | 08:32:57 | 17 Oct 2022 | | Holding(s) in Company | RNS |
| 10/10/22 | 12:11:11 | 10 Oct 2022 | | Director/PDMR Shareholding | RNS |
| 06/10/22 | 12:33:55 | 6 Oct 2022 | | Director/PDMR Shareholding | RNS |
| 06/10/22 | 12:30:03 | 6 Oct 2022 | | Director/PDMR Shareholding | RNS |
| 06/10/22 | 07:00:08 | 6 Oct 2022 | | Holding(s) in Company | RNS |
| 05/10/22 | 07:46:04 | 5 Oct 2022 | | Total Voting Rights | RNS |
| 03/10/22 | 16:02:15 | 3 Oct 2022 | | Sale of Filters and Packaging Completion of Sale | RNS |
| 03/10/22 | 07:05:06 | 3 Oct 2022 | | Appointment of New Chief Executive | RNS |
| 03/10/22 | 07:00:13 | 3 Oct 2022 | | Sale of Filters and Completion of Packaging Sale | RNS |
| 27/09/22 | 12:10:37 | 27 Sept 2022 | | Holding(s) in Company | RNS |
| 01/09/22 | 10:19:43 | 1 Sept 2022 | | Total Voting Rights | RNS |
| 17/08/22 | 07:00:06 | 17 Aug 2022 | | Results for the Half Year Ended 30 June 2022 | RNS |
| 08/08/22 | 13:17:41 | 8 Aug 2022 | | Result of Meeting | RNS |
| 05/08/22 | 14:57:46 | 5 Aug 2022 | | Total Voting Rights | RNS |
| 03/08/22 | 12:05:05 | 3 Aug 2022 | | Notice of 2022 Half Year Results Presentation | RNS |
| 02/08/22 | 10:05:09 | 2 Aug 2022 | | Holding(s) in Company | RNS |
| 01/08/22 | 07:30:05 | 1 Aug 2022 | | Total Voting Rights | RNS |
| 15/07/22 | 12:56:57 | 15 Jul 2022 | | Circ re. Publication of Class 1 and Notice of GM | RNS |
| 07/07/22 | 12:03:25 | 7 Jul 2022 | | Total Voting Rights | RNS |
| 07/07/22 | 11:57:04 | 7 Jul 2022 | | Holding(s) in Company | RNS |
| 07/07/22 | 07:00:07 | 7 Jul 2022 | | HY 2022 Pre-Close Trading Update | RNS |
| 01/07/22 | 09:30:23 | 1 Jul 2022 | | Total Voting Rights | RNS |
| 24/06/22 | 07:00:04 | 24 Jun 2022 | | Sale of Packaging Business | RNS |
| 01/06/22 | 09:23:50 | 1 Jun 2022 | | Total Voting Rights | RNS |
| 19/05/22 | 14:34:35 | 19 May 2022 | | Directorate Change | RNS |
| 19/05/22 | 14:10:30 | 19 May 2022 | | Result of AGM | RNS |
| 19/05/22 | 07:00:07 | 19 May 2022 | | Annual General Meeting - Trading Update | RNS |
| 18/05/22 | 12:41:17 | 18 May 2022 | | Total Voting Rights | RNS |
| 03/05/22 | 09:12:38 | 3 May 2022 | | Total Voting Rights | RNS |
| 29/04/22 | 14:18:57 | 29 Apr 2022 | | Holding(s) in Company | RNS |
| 26/04/22 | 10:42:42 | 26 Apr 2022 | | Holding(s) in Company | RNS |
| 21/04/22 | 11:57:43 | 21 Apr 2022 | | Holding(s) in Company | RNS |
| 11/04/22 | 16:00:02 | 11 Apr 2022 | | Annual Report and Accounts and Notice of AGM | RNS |
| 04/04/22 | 16:17:20 | 4 Apr 2022 | | Holding(s) in Company | RNS |
| 04/04/22 | 09:55:06 | 4 Apr 2022 | | Directorate Change | RNS |
| 01/04/22 | 09:25:41 | 1 Apr 2022 | | Total Voting Rights | RNS |
| 18/03/22 | 07:00:06 | 18 Mar 2022 | | Results for the Full Year Ended 31 December 2021 | RNS |
| 14/03/22 | 07:00:12 | 14 Mar 2022 | | Directorate Change | RNS |
| 04/03/22 | 11:00:06 | 4 Mar 2022 | | Invitation to FY 2021 Results Presentation | RNS |
| 01/03/22 | 09:52:55 | 1 Mar 2022 | | Total Voting Rights | RNS |
| 08/02/22 | 12:00:04 | 8 Feb 2022 | | Notice of Results | RNS |
| 01/02/22 | 09:02:28 | 1 Feb 2022 | | Total Voting Rights | RNS |
| 07/01/22 | 07:00:06 | 7 Jan 2022 | | FY 2021 Pre-close trading update | RNS |
| 04/01/22 | 07:58:01 | 4 Jan 2022 | | Total Voting Rights | RNS |
| 20/12/21 | 11:13:53 | 20 Dec 2021 | | Result of AGM | RNS |
| 17/12/21 | 07:46:04 | 17 Dec 2021 | | Total Voting Rights | RNS |
| 26/11/21 | 07:00:06 | 26 Nov 2021 | | Strategic Update and Directorate Change | RNS |
| 22/11/21 | 10:32:03 | 22 Nov 2021 | | Holding(s) in Company | RNS |
| 03/11/21 | 07:00:07 | 3 Nov 2021 | | Total Voting Rights | RNS |
| 26/10/21 | 07:00:04 | 26 Oct 2021 | | Strategic Update and Q3 2021 Trading | RNS |
