Financials
| Costain FY 2024 | Mar. 11, 2025 |
| Trading Update with Strong Forward Work Position | Jan. 27, 2025 |
| Results for the six months ended 30 June 2024 | Aug. 21, 2024 |
| Annual Report and Accounts and Notice of 2024 AGM | Apr. 09, 2024 |
| Costain Group PLC - Annual Report and Accounts 2023 | Apr. 09, 2024 |
| 2023 Full Year Results | Mar. 12, 2024 |
| AMP8 Water Framework Win with NWG & Trading Update | Jan. 10, 2024 |
Proxies
| Costain Group PLC 2024 AGM Resolutions | May. 16, 2024 |
| Result of AGM | May. 16, 2024 |
| AGM Statement | May. 16, 2024 |
| Costain Group PLC - Proxy Form 2024 | Apr. 09, 2024 |
| Costain Group PLC - Notice of Annual General Meeting 2024 | Apr. 09, 2024 |
| Results of AGM | May. 11, 2023 |
| Result of AGM | May. 11, 2023 |
Ownership Update
| Holding(s) in Company | Dec. 12, 2024 |
| Transaction in Own Shares | Nov. 14, 2024 |
| Transaction in Own Shares | Nov. 13, 2024 |
| Transaction in Own Shares | Nov. 12, 2024 |
| Transaction in Own Shares | Nov. 11, 2024 |
| Transaction in Own Shares | Nov. 08, 2024 |
| Transaction in Own Shares | Nov. 07, 2024 |
Announcements
| Costain awarded Urenco framework agreement | Mar. 20, 2025 |
| Investor Presentation via Investor Meet Company | Feb. 10, 2025 |
| Block listing Interim Review | Jan. 02, 2025 |
| Steve Mogford External Appointment | Dec. 24, 2024 |
| Costain / East Coast Cluster | Dec. 11, 2024 |
| Costain Wins New HS2 Systems Contract | Dec. 04, 2024 |
| Total Voting Rights | Dec. 02, 2024 |
Prospectuses
| COSTAIN GROUP PLC - Single prospectus | May. 07, 2020 |
| Firm Placing, Placing & Open Offer | Feb. 28, 2014 |
| Prospectus in connection with the proposed acquisition of May Gurney | Mar. 26, 2013 |