Bymetric
UK company intelligence
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Mariner Topco Limited group

PSC-derived corporate control hierarchy for active UK corporate PSC filings.

Company profile
Children
38
Direct
1
Levels
8

Hierarchy

Updated 07 Jul 2026 09:49

PSC corporate control
  1. Root Active LTD 38 children

    Mariner Topco Limited

    CRN 16195228
    Profile
    1. Level 1 Active LTD 37 children

      Mariner Midco 1 Limited

      CRN 16195465
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      1. Level 2 Active LTD 36 children

        Mariner Midco 2 Limited

        CRN 16195523
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        1. Level 3 Active LTD 35 children

          Mariner Bidco Limited

          CRN 16195589
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          1. Level 4 Active LTD 34 children

            HSL Compliance Group Limited

            CRN 11738872
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            1. Level 5 Active LTD 33 children

              HSL Compliance Holdings Limited

              CRN 08313030
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              1. Level 6 Active LTD 5 children

                HSL Compliance Advanced Water Technologies Ltd

                CRN 04344970
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                1. Level 7 Active LTD

                  Airstream Environmental Limited

                  CRN 03677488
                  Profile
                2. Level 7 Active LTD

                  Certifact Services Ltd

                  CRN 07902781
                  Profile
                3. Level 7 Active LTD

                  D. Mac Water Services Ltd

                  CRN 09462272
                  Profile
                4. Level 7 Active LTD

                  Eastern Shires LCS Limited

                  CRN 10037865
                  Profile
                5. Level 7 Active LTD

                  S P Environmental Services Ltd

                  CRN 09686720
                  Profile
              2. Level 6 Active LTD 3 children

                R J Urmson Group Limited

                CRN 12837834
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                1. Level 7 Active LTD 1 child

                  R J Urmson Commissioning Engineers Limited

                  CRN 05351065
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                  1. Level 8 Active LTD

                    Urmson Fire Specialists Limited

                    CRN 11438396
                    Profile
                2. Level 7 Active LTD

                  National Hygiene Services Limited

                  CRN 09848539
                  Profile
              3. Level 6 Active LTD 2 children

                Albanyoak Limited

                CRN 01704503
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                1. Level 7 Active LTD

                  Aquatreat Limited

                  CRN 01707062
                  Profile
                2. Level 7 Active LTD

                  Chemtreat Limited

                  CRN 01692887
                  Profile
              4. Level 6 Active LTD 2 children

                HSL Compliance Enitial Ltd

                CRN 02589078
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                1. Level 7 Active LTD

                  Enitial Services Limited

                  CRN 04958070
                  Profile
                2. Level 7 Active LTD

                  Enitial Water Ltd

                  CRN 04905293
                  Profile
              5. Level 6 Active LTD 2 children

                HSL Compliance Ltd

                CRN 02425951
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                1. Level 7 Active LTD 1 child

                  Dma Canyon Ltd

                  CRN SC197200
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                  1. Level 8 Active LTD

                    Canyon Water Services Limited

                    CRN SC420365
                    Profile
              6. Level 6 Active LTD 1 child

                Crosmill Holdings Ltd

                CRN 03787955
                Explore branch Profile
                1. Level 7 Active LTD

                  Crosmill Limited

                  CRN 01607965
                  Profile
              7. Level 6 Active LTD 1 child

                Treatment 4 Water Limited

                CRN 05652482
                Explore branch Profile
                1. Level 7 Active LTD

                  T4W Clo2 Limited

                  CRN 16552342
                  Profile
              8. Level 6

                08369139

                CRN 08369139
              9. Level 6 Active LTD

                Apc Compliance Limited

                CRN 05392042
                Profile
              10. Level 6 Active LTD

                Chemical Treatment Services (Ireland) Limited

                CRN NI017799
                Profile
              11. Level 6 Active LTD

                Houseman Environmental Limited

                CRN 08774566
                Profile
              12. Level 6 Active LTD

                HSL Inspection and Testing Ltd

                CRN 07814171
                Profile
              13. Level 6 Active LTD

                Ice Plumbing & Water Services Limited

                CRN 04991181
                Profile
              14. Level 6 Active LTD

                Jordan Environmental Limited

                CRN 03482967
                Profile
              15. Level 6 Active LTD

                Legionella Control International Limited

                CRN 05325807
                Profile
              16. Level 6 Active LTD

                Plexus Innovation Limited

                CRN 11105009
                Profile
              17. Level 6 Active LTD

                Saferspaces Limited

                CRN 07453514
                Profile