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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

Sill, John Martin

    Related profiles found in government register
  • Sill, John Martin
    British

    Registered addresses and corresponding companies
    • 19 Sherwood Drive, Skellow, Doncaster, South Yorkshire, DN6 8NY

      IIF 1 IIF 2 IIF 3
  • Sill, John Martin

    Registered addresses and corresponding companies
    • 19 Sherwood Drive, Skellow, Doncaster, South Yorkshire, DN6 8NY

      IIF 4 IIF 5 IIF 6
  • Sill, John Martin
    British engineer born in December 1947

    Resident in United Kingdom

    Registered addresses and corresponding companies
child relation
Offspring entities and appointments
Active 2
  • 1
    OPTIMUM UROSPORT LIMITED
    - now 04173497
    OPTIMUM URO SPORT LIMITED - 2001-03-13
    Optima House, Askern Road, Toll Bar, Doncaster
    Dissolved Corporate (2 parents)
    Officer
    2003-08-28 ~ dissolved
    IIF 2 - Secretary → ME
  • 2
    QUALASTIC PRODUCTS LIMITED
    03940760 01298021
    Optima House, Askern Road, Tollbar, Doncaster, South Yorkshire
    Dissolved Corporate (2 parents)
    Officer
    2003-08-28 ~ dissolved
    IIF 3 - Secretary → ME
Ceased 6
  • 1
    OPTIMA HOUSE LIMITED
    01465030
    Optima House, Askern Road, Tollbar, Doncaster, South Yorkshire
    Active Corporate (2 parents)
    Equity (Company account)
    4,267,806 GBP2025-05-31
    Officer
    2003-08-28 ~ 2013-12-31
    IIF 1 - Secretary → ME
  • 2
    OPTIMA INTERNATIONAL LIMITED
    - now 00684096 01298021
    WEDGE WIRE SCREENS LIMITED
    - 2007-06-13 00684096 01298021
    Optima House, Askern Road, Toll Bar, Doncaster, South Yorkshire
    Active Corporate (3 parents)
    Equity (Company account)
    3,106,700 GBP2025-05-31
    Officer
    2003-04-01 ~ 2013-12-31
    IIF 7 - Director → ME
    2003-08-28 ~ 2005-02-15
    IIF 6 - Secretary → ME
  • 3
    OPTIMUM SYSTEMS LIMITED
    - now 01642976 04119984
    SAMPLING ENGINEERING SYSTEMS LIMITED
    - 2001-01-11 01642976 04119984
    Optima House, Askern Road, Toll Bar, Doncaster, South Yorkshire
    Active Corporate (2 parents)
    Equity (Company account)
    6,000 GBP2025-05-31
    Officer
    ~ 2013-12-31
    IIF 10 - Director → ME
    2003-06-01 ~ 2013-12-31
    IIF 5 - Secretary → ME
  • 4
    SAMPLING ENGINEERING SYSTEMS LIMITED
    - now 04119984 01642976
    OPTIMUM SYSTEMS LIMITED - 2001-01-11 01642976
    Optima House, Askern Road Toll Bar, Doncaster, South Yorkshire
    Active Corporate (1 parent)
    Equity (Company account)
    100 GBP2025-05-31
    Officer
    2003-08-28 ~ 2013-12-31
    IIF 4 - Secretary → ME
  • 5
    TILEWIND LIMITED
    01111264
    Optima House, Askern Road, Toll Bar, Doncaster, South Yorkshire
    Active Corporate (2 parents)
    Equity (Company account)
    311,526 GBP2025-05-31
    Officer
    2006-08-15 ~ 2013-12-31
    IIF 9 - Director → ME
  • 6
    WEDGE WIRE SCREENS LIMITED
    - now 01298021 00684096
    OPTIMA INTERNATIONAL LIMITED
    - 2007-06-13 01298021 00684096
    QUALASTIC INTERNATIONAL LIMITED - 2000-03-01
    QUALASTIC PRODUCTS LIMITED - 1987-09-04 03940760
    Optima House, Askern Road, Toll Bar, Doncaster, South Yorkshire
    Active Corporate (2 parents)
    Equity (Company account)
    1,000 GBP2025-05-31
    Officer
    2005-02-16 ~ 2013-12-31
    IIF 8 - Director → ME

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