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The above diagram shows the color scheme of the layout in the main result page. The parent entities and officers who have significant controls over the individuals in focus are always inapplicable. The offspring entities and appointments are those entities that the individuals in focus can influence on.

Clicking the links on parent entities or officers, and offspring entities or managed companies will put them in focus and show upstream or downstream connections. In general, ascendant entities can be found by moving toward upstream, and descendant entities are by toward downstream. In this way, progenitor entities such as grandparent companies (parents of parent), sibling companies (children of parent), partner companies (parents of child), and progeny entities such as grandchild companies (children of child) can be found easily.

Parent entities and officers
Inapplicable
parent relation
Individuals in focus

Walker, Stephen Charles Alexander, Dr

    Related profiles found in government register
  • Walker, Stephen Charles Alexander, Dr
    British chartered engineer born in March 1958

    Resident in United Kingdom

    Registered addresses and corresponding companies
  • Walker, Stephen Charles Alexander, Dr
    British engineer born in March 1958

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 12 Wayland Close, Bradfield, Reading, Berkshire, RG7 6AG

      IIF 7 IIF 8
  • Walker, Stephen Charles Alexander, Dr
    British engineering director born in March 1958

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 12 Wayland Close, Bradfield, Reading, Berkshire, RG7 6AG

      IIF 9 IIF 10
  • Walker, Stephen Charles Alexander
    British engineering director born in March 1958

    Registered addresses and corresponding companies
    • 19 Magnus Drive, Hatch Warren, Basingstoke, Hampshire, RG22 4TX

      IIF 11
child relation
Offspring entities and appointments
Active 0
  • Not found in our database.
Ceased 10
  • 1
    SIMON-HARTLEY CAMBI LIMITED - 2002-12-23
    GAC NO. 135 LIMITED - 1998-12-30 03738664
    Congleton Technology Park Radnor Park Ind. Est., First Avenue, Back Lane, Congleton, Cheshire, United Kingdom
    Active Corporate (2 parents)
    Officer
    1999-01-27 ~ 2002-09-24
    IIF 8 - Director → ME
  • 2
    10 Wayland Close, Bradfield, Reading, England
    Active Corporate (3 parents)
    Equity (Company account)
    29,503 GBP2024-12-31
    Officer
    1999-01-13 ~ 2000-10-12
    IIF 7 - Director → ME
  • 3
    THAMES WATER PRODUCTS LIMITED - 1998-09-30 02249185
    PCI MEMBRANE SYSTEMS LIMITED - 1998-09-30 02249185
    THAMES WATER PRODUCTS LIMITED - 1998-09-28 02249185
    THAMES WATER PRODUCTS AND SERVICES LIMITED - 1997-07-17
    PWT WORLDWIDE LIMITED - 1994-03-28
    PORTALS WATER TREATMENT LIMITED - 1990-01-31 00132823
    LAVERSTOKE INVESTMENT TRUST LIMITED - 1978-12-31
    Clearwater Court, Vastern Road, Reading, Berkshire
    Dissolved Corporate (3 parents, 4 offsprings)
    Officer
    1999-08-11 ~ 2000-01-01
    IIF 2 - Director → ME
  • 4
    STIRLING WATER SERVICES LIMITED - 1995-12-07 02364116
    SOUTH BUCKS EFFLUENT (PLANT SERVICES) LIMITED - 1995-11-29
    6 Snow Hill, London, England
    Dissolved Corporate (4 parents)
    Officer
    1997-05-22 ~ 1999-03-26
    IIF 10 - Director → ME
  • 5
    THAMES WATER (PWT) PENSION TRUSTEES LIMITED - 1994-08-18
    TRUSHELFCO (NO. 1559) LIMITED - 1990-03-26 02457748
    Clearwater Court, Vastern Road, Reading, Berkshire
    Dissolved Corporate (4 parents)
    Officer
    2007-04-18 ~ 2009-04-10
    IIF 1 - Director → ME
  • 6
    TRUSHELFCO (NO.1225) LIMITED - 1988-05-09
    Clearwater Court, Vastern Road, Reading, Berkshire
    Active Corporate (6 parents)
    Officer
    2007-04-18 ~ 2015-02-28
    IIF 6 - Director → ME
  • 7
    PCI MEMBRANE SYSTEMS LIMITED - 1998-09-30 00315984
    THAMES WATER PRODUCTS LIMITED - 1998-09-30 00315984
    P.C.I. MEMBRANE SYSTEMS LIMITED - 1998-09-28 00315984
    FINEPRIVATE LIMITED - 1988-09-01
    Clearwater Court, Vastern Road, Reading, Berkshire
    Active Corporate (3 parents, 4 offsprings)
    Officer
    1998-09-03 ~ 2000-01-01
    IIF 9 - Director → ME
  • 8
    SIMON-HARTLEY LIMITED - 2001-11-12
    Clearwater Court, Vastern Road, Reading, Berkshire
    Dissolved Corporate (3 parents, 2 offsprings)
    Officer
    1999-08-11 ~ 2000-01-01
    IIF 5 - Director → ME
  • 9
    TRUSHELFCO (NO. 1579) LIMITED - 1990-04-05 02426275
    Clearwater Court, Vastern Road, Reading, Berkshire
    Active Corporate (3 parents)
    Equity (Company account)
    2 GBP2024-09-30
    Officer
    2007-12-10 ~ 2009-04-10
    IIF 4 - Director → ME
  • 10
    Clearwater Court, Vastern Road, Reading, Berkshire
    Active Corporate (14 parents, 2 offsprings)
    Officer
    2001-09-20 ~ 2006-12-01
    IIF 3 - Director → ME
    1994-12-06 ~ 1997-03-31
    IIF 11 - Director → ME

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Contains public sector information retrieved at 9 February 2026 and licensed under the Open Government Licence v3.0.