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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

Sikorski, Jurek Stefan

    Related profiles found in government register
  • Sikorski, Jurek Stefan
    British chief exec director born in August 1951

    Resident in England

    Registered addresses and corresponding companies

    • icon of address Dabrowica Ryhill Way, Lower Earley, Reading, Berkshire, RG6 4AZ

      IIF 1
  • Sikorski, Jurek Stefan
    British chief executive born in August 1951

    Resident in England

    Registered addresses and corresponding companies

    • icon of address Dabrowica Ryhill Way, Lower Earley, Reading, Berkshire, RG6 4AZ

      IIF 2 IIF 3
  • Sikorski, Jurek Stefan
    British dir international medical mark born in August 1951

    Resident in England

    Registered addresses and corresponding companies

    • icon of address Dabrowica Ryhill Way, Lower Earley, Reading, Berkshire, RG6 4AZ

      IIF 4
  • Sikorski, Jurek Stefan
    British director born in August 1951

    Resident in England

    Registered addresses and corresponding companies

    • icon of address Lutterworth Hall, Saint Marys Road, Lutterworth, Leicestershire, LE17 4PS

      IIF 5

    • icon of address Dabrowica Ryhill Way, Lower Earley, Reading, Berkshire, RG6 4AZ

      IIF 6
  • Sikorski, Jurek Stefan
    British executive director born in August 1951

    Resident in England

    Registered addresses and corresponding companies

    • icon of address Dabrowica, Ryhill Way, Lower Earley, Reading, RG6 4AZ, England

      IIF 7
  • Sikorski, Jurek Stefan
    British marketing & sales director born in August 1951

    Resident in England

    Registered addresses and corresponding companies

    • icon of address Dabrowica Ryhill Way, Lower Earley, Reading, Berkshire, RG6 4AZ

      IIF 8
  • Sikorski, Jurek Stefan
    British non-executive director born in August 1951

    Resident in England

    Registered addresses and corresponding companies

    • icon of address 5, New Street Square, London, EC4A 3TW, United Kingdom

      IIF 9
  • Sikorski, Jurek Stefan
    British none born in August 1951

    Resident in England

    Registered addresses and corresponding companies

    • icon of address Dabrowica, Ryhill Way, Lower Early, Reading, Berkshire, RG6 4AZ, United Kingdom

      IIF 10
child relation
Offspring entities and appointments
Active 1
  • 1
    icon of address 56 Harwood Avenue, Bromley, Kent, United Kingdom
    Dissolved Corporate (1 parent)
    Officer
    icon of calendar 2010-05-07 ~ dissolved
    IIF 10 - Director → ME
Ceased 9
  • 1
    ASSOCIATION FOR THE ADVANCEMENT OF BRITISH BIOTECHNOLOGY - 1989-11-13
    icon of address Victoria House, Bloomsbury Way, London, England
    Active Corporate (20 parents)
    Officer
    icon of calendar 1999-01-31 ~ 2001-09-01
    IIF 1 - Director → ME
  • 2
    PROTEUS INTERNATIONAL PUBLIC LIMITED COMPANY - 1999-09-14
    PROTHERICS PLC - 2008-12-04
    PROTHERICS LIMITED - 2010-04-11
    POWERFIRST PUBLIC LIMITED COMPANY - 1990-04-18
    icon of address Chapman House, Farnham Business Park, Farnham, Surrey
    Dissolved Corporate (4 parents)
    Officer
    icon of calendar 1994-06-13 ~ 1996-08-31
    IIF 2 - Director → ME
  • 3
    icon of address 5 New Street Square, London
    Active Corporate (3 parents)
    Equity (Company account)
    99,203 GBP2024-12-31
    Officer
    icon of calendar 2013-11-27 ~ 2020-07-31
    IIF 9 - Director → ME
  • 4
    OPTIONSILVER PUBLIC LIMITED COMPANY - 2000-12-01
    icon of address Lutterworth Hall, Saint Marys Road, Lutterworth, Leicestershire
    Active Corporate (6 parents, 2 offsprings)
    Officer
    icon of calendar 2000-12-04 ~ 2014-05-21
    IIF 5 - Director → ME
  • 5
    icon of address 4th Floor, 2-4 Darwin Close, Reading, England
    Active Corporate (4 parents)
    Equity (Company account)
    -1,067,732 GBP2024-12-31
    Officer
    icon of calendar 2020-08-20 ~ 2022-01-20
    IIF 7 - Director → ME
  • 6
    MUREX DIAGNOSTICS BRANCHES LIMITED - 1996-02-01
    ALNERY NO. 1150 LIMITED - 1992-01-13
    BCW BRANCHES LIMITED - 1992-05-05
    icon of address Abbott House Vanwall Business Park, Vanwall Road, Maidenhead, Berkshire, United Kingdom
    Active Corporate (5 parents)
    Officer
    icon of calendar 1992-04-23 ~ 1993-08-03
    IIF 8 - Director → ME
  • 7
    MUSTGLEN LIMITED - 1987-05-20
    PROTEUS MOLECULAR DESIGN LIMITED - 1999-12-13
    PEPSITRON LIMITED - 1987-06-22
    PROTEUS BIOTECHNOLOGY LIMITED - 1990-04-11
    PROTHERICS MOLECULAR DESIGN LIMITED - 2006-06-07
    icon of address St. Martin's Court, 10 Paternoster Row, London, England
    Active Corporate (3 parents)
    Officer
    icon of calendar 1994-06-13 ~ 1996-08-31
    IIF 3 - Director → ME
  • 8
    SMITH & NEPHEW-SOUTHALLS LIMITED - 1981-12-31
    icon of address 101 Hessle Road, Hull, England, United Kingdom
    Active Corporate (4 parents)
    Officer
    icon of calendar 1993-08-09 ~ 1994-06-12
    IIF 4 - Director → ME
  • 9
    icon of address 101 Hessle Road, Hull, England, United Kingdom
    Active Corporate (5 parents)
    Officer
    icon of calendar 1993-08-09 ~ 1994-06-12
    IIF 6 - Director → ME

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Contains public sector information retrieved at 12 November 2025 and licensed under the Open Government Licence v3.0.