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"https://find-and-update.company-information.service.gov.uk/company/01535477/filing-history" }, "confirmation_statement": { "next_due": "2026-08-26", "last_made_up": "2025-08-12" }, "officers": [], "psc": [ { "name": "Stantec Treatment Holding Limited", "kind": "corporate-entity-person-with-significant-control", "person_url": null, "controlling_company_url": null, "natures_of_control": [ "ownership-of-shares-75-to-100-percent", "voting-rights-75-to-100-percent", "right-to-appoint-and-remove-directors-as-firm", "significant-influence-or-control-as-firm" ], "notified_on": "2016-04-06", "ceased_on": "2018-11-02", "nationality": "", "country_of_residence": "", "source": "snapshot" }, { "name": "Mwh Uk Acquisitions Limited", "kind": "corporate-entity-person-with-significant-control", "person_url": null, "controlling_company_url": "/company/11652932", "natures_of_control": [ "ownership-of-shares-75-to-100-percent", "voting-rights-75-to-100-percent", "right-to-appoint-and-remove-directors" ], "notified_on": "2018-11-02", "ceased_on": null, "nationality": "", "country_of_residence": "", "source": "snapshot" } ], "external_links": [], "provenance": { "source": "snapshot", "first_seen_at": "2026-07-05T12:35:35.811816+00:00", "last_seen_snapshot": "2026-08-01", "retrieved_at": "2026-08-02T04:49:33.076767+00:00" }, "licence": "Open Government Licence v3.0", "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/", "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: Companies House." }