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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.

Jump to: Offsprings
Parent entities and officers
Inapplicable
parent relation
Individuals in focus

Clarkson, Iain Geoffrey

child relation
Offspring entities and appointments 44
  • 1
    AMEC FOCUS PENSIONS TRUSTEE LIMITED
    - now 01716459
    CAITHNESS SOLUTIONS LIMITED - 2012-12-18
    AMEC (WSPS) PENSIONS TRUSTEE LIMITED - 2010-04-30
    WATSON STEEL PENSIONS TRUSTEE LIMITED - 2001-06-29
    MATTHEW HALL MINING & MINERALS LIMITED - 1992-04-10
    MINTWOVE LIMITED - 1983-06-21
    Dissolved Corporate (23 parents)
    Officer
    2012-12-19 ~ 2016-01-21
    IIF 10 - Director → ME
  • 2
    AMEC NUCLEAR M & O LIMITED
    - now 05664844
    AMEC NUCLEAR LIMITED - 2007-09-03
    Dissolved Corporate (16 parents)
    Officer
    2008-02-01 ~ 2016-01-21
    IIF 5 - Director → ME
  • 3
    AMEC NUCLEAR OVERSEAS LIMITED
    - now 04037762
    AMEC NNC OVERSEAS LIMITED - 2007-09-03
    NNC OVERSEAS LIMITED - 2005-08-08
    NNC ENVIRONMENTAL LIMITED - 2003-12-30
    INHOCO 2111 LIMITED - 2000-10-13
    Dissolved Corporate (23 parents, 1 offspring)
    Officer
    2008-02-01 ~ 2014-03-31
    IIF 2 - Director → ME
  • 4
    AMEC NUCLEAR PROJECTS LIMITED
    05664962
    Dissolved Corporate (15 parents)
    Officer
    2008-02-01 ~ 2016-01-21
    IIF 1 - Director → ME
  • 5
    AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED - now
    JACOBS CLEAN ENERGY INTERNATIONAL LIMITED - 2024-09-30
    AMEC FOSTER WHEELER NUCLEAR INTERNATIONAL LIMITED - 2020-03-18
    AMEC NUCLEAR INTERNATIONAL LIMITED
    - 2014-12-16 03260477 03203966
    NNC LIMITED
    - 2008-09-24 03260477 01120437... (more)
    TECHNICA LIMITED - 2005-08-18
    UNITED DECOMMISSIONING TECHNOLOGIES LIMITED - 2003-04-16
    LEADERS IN BUSINESS LIMITED - 1996-11-18
    Active Corporate (33 parents, 1 offspring)
    Officer
    2008-02-01 ~ 2014-03-31
    IIF 3 - Director → ME
  • 6
    AMENTUM CLEAN ENERGY LIMITED - now
    JACOBS CLEAN ENERGY LIMITED - 2024-09-30
    WOOD NUCLEAR LIMITED - 2020-03-17
    AMEC FOSTER WHEELER NUCLEAR UK LIMITED
    - 2018-09-03 01120437
    AMEC NUCLEAR UK LIMITED
    - 2014-12-12 01120437
    AMEC NNC LIMITED - 2007-09-03
    NNC LIMITED - 2005-08-08
    NATIONAL NUCLEAR CORPORATION LIMITED - 1989-04-01
    Active Corporate (46 parents, 4 offsprings)
    Officer
    2008-02-01 ~ 2016-01-21
    IIF 7 - Director → ME
  • 7
    AMERCARE LIMITED
    - now 02350378
    AMERCARE ENCLOSURES LIMITED - 1989-06-08
    AMERCARE LIMITED - 1989-05-09
    LANGLEYLAKE LIMITED - 1989-04-17
    Active Corporate (18 parents)
    Officer
    1997-12-18 ~ 1998-12-15
    IIF 17 - Director → ME
  • 8
    AQUILA NUCLEAR ENGINEERING LIMITED
    07442871
    Active Corporate (24 parents)
    Officer
    2020-05-08 ~ 2021-12-23
    IIF 41 - Director → ME
  • 9
    CALDER FINCO UK LTD
    05721362
    Active Corporate (14 parents, 1 offspring)
    Officer
    2020-05-11 ~ 2025-10-29
    IIF 30 - Director → ME
    2020-05-11 ~ 2025-10-29
    IIF 47 - Secretary → ME
  • 10
    CALDER GROUP (TRUSTEES) LIMITED
    - now 04427519
    115CR (153) LIMITED - 2002-11-19
    Active Corporate (19 parents)
    Officer
    2025-12-01 ~ now
    IIF 43 - Director → ME
  • 11
    CALDER GROUP HOLDINGS LIMITED
    09457820
    Active Corporate (12 parents, 1 offspring)
    Officer
    2020-05-11 ~ 2025-10-29
    IIF 31 - Director → ME
  • 12
    CALDER GROUP LIMITED
    - now 03491249
    GRIFFINHILL LIMITED - 1998-07-16
    Active Corporate (18 parents, 6 offsprings)
    Officer
    2020-05-07 ~ 2025-10-29
    IIF 28 - Director → ME
    2021-09-16 ~ 2025-10-29
    IIF 45 - Secretary → ME
  • 13
    CALDER HOLDINGS LIMITED
    - now 03491252
    LENNOXGREEN LIMITED - 1998-08-13
    Active Corporate (18 parents, 1 offspring)
    Officer
    2020-05-11 ~ 2025-10-29
    IIF 32 - Director → ME
    2021-09-16 ~ 2025-10-29
    IIF 48 - Secretary → ME
  • 14
    CALDER INDUSTRIAL MATERIALS LIMITED
    - now 00028073
    COOKSON INDUSTRIAL MATERIALS LIMITED - 1994-06-01
    ASSOCIATED LEAD MANUFACTURERS LIMITED - 1986-04-01
    Active Corporate (45 parents, 2 offsprings)
    Officer
    2020-05-11 ~ 2025-10-29
    IIF 26 - Director → ME
  • 15
    CALDER INTERNATIONAL HOLDINGS LIMITED
    - now 03491092
    PLANETVALE LIMITED - 1998-07-15
    Active Corporate (17 parents)
    Officer
    2020-05-11 ~ 2025-10-29
    IIF 29 - Director → ME
    2020-05-11 ~ 2025-10-29
    IIF 46 - Secretary → ME
  • 16
    ENERGY, SAFETY AND RISK CONSULTANTS (UK) LIMITED
    - now 07825532
    SAFETY CONSULTING (UK) LIMITED - 2012-03-29
    SERCO GENERAL SERVICES LIMITED - 2012-03-23
    Active Corporate (29 parents)
    Officer
    2012-06-29 ~ 2014-03-31
    IIF 34 - Director → ME
  • 17
    F2 CHEMICALS LIMITED
    - now 02680159
    BNFL FLUOROCHEMICALS LIMITED - 1997-04-07
    Active Corporate (68 parents, 1 offspring)
    Officer
    1997-09-03 ~ 2000-03-28
    IIF 14 - Director → ME
  • 18
    F2 CHEMICALS PENSION TRUSTEE COMPANY LIMITED - now
    BNFL FLUOROCHEMICALS PENSION TRUSTEE COMPANY LIMITED
    - 2000-03-09 02781304 02680159
    Dissolved Corporate (25 parents)
    Officer
    1997-11-26 ~ 1999-09-07
    IIF 18 - Director → ME
  • 19
    FAST REACTOR TECHNOLOGY LIMITED
    01853864
    Active Corporate (44 parents)
    Officer
    2008-02-01 ~ 2016-01-21
    IIF 6 - Director → ME
  • 20
    HELANDER PRECISION ENGINEERING LIMITED
    02739330
    Active Corporate (25 parents)
    Officer
    2020-05-07 ~ 2025-05-21
    IIF 44 - Director → ME
  • 21
    LEEDS BRONZE ENGINEERING LIMITED
    - now 03491043
    SABREMARSH LIMITED - 1998-04-01
    Active Corporate (25 parents)
    Officer
    2020-05-08 ~ 2025-05-21
    IIF 39 - Director → ME
  • 22
    MIDLAND AEROSPACE LIMITED
    - now 04326476
    EDGER 155 LIMITED - 2002-02-19
    Active Corporate (24 parents)
    Officer
    2020-05-07 ~ 2025-10-29
    IIF 40 - Director → ME
  • 23
    NATIONAL NUCLEAR CORPORATION LIMITED
    - now 02290928 01120437
    NNC LIMITED - 1989-04-01
    DASHBULGE LIMITED - 1989-02-27
    Active Corporate (39 parents)
    Officer
    2008-02-01 ~ 2009-03-02
    IIF 19 - Director → ME
  • 24
    NIRAS ANALYTICAL LIMITED
    04701858
    Dissolved Corporate (8 parents)
    Officer
    2008-02-01 ~ dissolved
    IIF 22 - Director → ME
  • 25
    NUCLEAR MANAGEMENT PARTNERS LIMITED
    - now 05894268
    WASHINGTON BUSINESS DEVELOPMENT (UK) LIMITED - 2007-04-02
    Dissolved Corporate (47 parents)
    Officer
    2010-07-28 ~ 2016-01-21
    IIF 9 - Director → ME
  • 26
    PWR POWER PROJECTS LIMITED
    - now 02281663
    POLARSTOCK LIMITED - 1988-10-14
    Active Corporate (50 parents)
    Officer
    2008-02-01 ~ 2016-01-21
    IIF 12 - Director → ME
  • 27
    SOLUTIONS-NNC LIMITED
    - now 01691539
    FASTEC LIMITED - 2004-12-07
    BOOTHS PARK PROJECTS LIMITED - 1991-04-03
    MEDART LIMITED - 1984-11-27
    Dissolved Corporate (13 parents)
    Officer
    2008-02-01 ~ dissolved
    IIF 24 - Director → ME
  • 28
    SPRINGFIELDS FUELS LIMITED
    - now 03857770
    UNATEC LIMITED - 2004-04-29
    Active Corporate (37 parents, 1 offspring)
    Officer
    2005-04-01 ~ 2007-12-31
    IIF 15 - Director → ME
  • 29
    STAMPTREE LIMITED
    05636469
    Active Corporate (14 parents, 1 offspring)
    Officer
    2020-05-11 ~ 2025-10-29
    IIF 27 - Director → ME
  • 30
    STATS-NNC LIMITED
    - now 04339062
    INHOCO 2584 LIMITED - 2002-02-27
    Dissolved Corporate (17 parents)
    Officer
    2008-02-01 ~ 2012-11-28
    IIF 8 - Director → ME
  • 31
    STORNOWAY WIND FARM LIMITED - now
    LEWIS WIND POWER LIMITED
    - 2016-03-21 SC225262
    Active Corporate (39 parents)
    Officer
    2010-10-05 ~ 2015-12-23
    IIF 33 - Director → ME
  • 32
    TECHNICA-NNC LIMITED
    - now SC235856
    HALDENBAY LIMITED - 2002-11-06
    Dissolved Corporate (20 parents)
    Officer
    2008-02-01 ~ 2012-11-28
    IIF 13 - Director → ME
  • 33
    TETRA TECH GROUP LIMITED - now
    WYG GROUP LIMITED
    - 2020-12-16 06595608
    Active Corporate (21 parents, 4 offsprings)
    Officer
    2016-06-07 ~ 2019-02-25
    IIF 35 - Director → ME
  • 34
    TETRA TECH INTERNATIONAL DEVELOPMENT PROJECTS LIMITED - now
    WYG INTERNATIONAL PROJECTS LIMITED
    - 2020-03-05 03195423
    IMC PROJECTS LIMITED - 2008-01-03
    BROOMCO (1090) LIMITED - 1996-06-17
    Active Corporate (37 parents, 3 offsprings)
    Officer
    2016-06-07 ~ 2019-02-25
    IIF 36 - Director → ME
  • 35
    TETRA TECH UK CONSULTING GROUP LIMITED - now
    TETRA TECH UK GROUP CONSULTING LIMITED - 2020-12-17
    WYG LIMITED - 2020-12-16
    WYG PLC
    - 2019-07-10 01869543 05111508... (more)
    WHITE YOUNG GREEN PLC - 2009-12-18
    ERNEST GREEN AND PARTNERS HOLDINGS PLC - 1997-07-21
    Active Corporate (40 parents, 7 offsprings)
    Officer
    2016-06-07 ~ 2019-02-25
    IIF 37 - Director → ME
  • 36
    TSB (INVESTMENT EUROPE) LIMITED
    - now 03976730
    BNFL (INVESTMENTS - EUROPE) LIMITED
    - 2006-12-05 03976730
    Dissolved Corporate (15 parents)
    Officer
    2006-09-29 ~ 2007-12-31
    IIF 21 - Director → ME
  • 37
    UK NUCLEAR RESTORATION LIMITED
    08353690
    Dissolved Corporate (20 parents)
    Officer
    2013-01-09 ~ 2013-10-18
    IIF 11 - Director → ME
  • 38
    UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED
    - now 03857752
    NATIONAL NUCLEAR LABORATORY LIMITED
    - 2024-12-17 03857752
    NEXIA SOLUTIONS LIMITED - 2008-11-10
    UNITED NUCLEAR TECHNOLOGIES LIMITED - 2004-11-08
    Active Corporate (45 parents, 1 offspring)
    Officer
    2019-10-01 ~ now
    IIF 42 - Director → ME
  • 39
    URANIUM ASSET MANAGEMENT LIMITED
    - now 03162046 07169369
    BNFL URANIUM ASSET MANAGEMENT COMPANY LIMITED
    - 2005-01-27 03162046 07169369
    Active Corporate (33 parents, 1 offspring)
    Officer
    2004-12-20 ~ 2007-12-31
    IIF 25 - Director → ME
  • 40
    WESTINGHOUSE ELECTRIC COMPANY UK LIMITED - now
    WESTINGHOUSE PROJECTS UK LIMITED
    - 2009-05-13 04006213
    Active Corporate (34 parents, 8 offsprings)
    Officer
    2004-01-01 ~ 2007-12-31
    IIF 23 - Director → ME
  • 41
    WESTINGHOUSE ELECTRIC ENERGY SYSTEMS UK LIMITED
    - now 03108756 04006213... (more)
    PETTER REFRIGERATION LIMITED - 1998-06-11
    ORCHIDCHASE LIMITED - 1995-12-11
    Dissolved Corporate (19 parents)
    Officer
    2003-11-18 ~ 2007-12-31
    IIF 20 - Director → ME
  • 42
    WESTINGHOUSE ELECTRIC UK HOLDINGS LIMITED - now
    WESTINGHOUSE ELECTRIC UK LIMITED
    - 2009-05-13 02458109 05245506... (more)
    BRITISH NUCLEAR GROUP LIMITED - 2004-10-04
    BNFL (UK) LIMITED - 2003-10-28
    FLOWBRAND LIMITED - 1990-02-09
    Active Corporate (49 parents, 9 offsprings)
    Officer
    2005-04-01 ~ 2007-12-31
    IIF 16 - Director → ME
  • 43
    WOOD FINANCE UK LIMITED - now
    WOOD NUCLEAR HOLDINGS LIMITED - 2022-01-24
    AMEC FOSTER WHEELER NUCLEAR HOLDINGS LIMITED - 2018-09-03
    AMEC NUCLEAR HOLDINGS LIMITED
    - 2014-12-12 03725076 00163609
    NNC HOLDINGS LIMITED - 2005-08-08
    Active Corporate (40 parents, 7 offsprings)
    Officer
    2008-02-01 ~ 2014-03-31
    IIF 4 - Director → ME
  • 44
    WYG INTERNATIONAL LIMITED
    - now 03195485
    IMC CONSULTING LIMITED - 2005-07-01
    IMC ECONOMIC AND ENERGY CONSULTANTS LIMITED - 1998-05-20
    BROOMCO (1087) LIMITED - 1996-06-17
    Converted / Closed Corporate (40 parents, 5 offsprings)
    Officer
    2016-06-07 ~ now
    IIF 38 - Director → ME

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Contains public sector information retrieved at 14 July 2026 and licensed under the Open Government Licence v3.0.