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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

James, Darren Glyn

    Related profiles found in government register
  • James, Darren Glyn
    British born in June 1967

    Resident in Wales

    Registered addresses and corresponding companies

    • 12th, Floor Quayside Tower, 252-260 Broad Street, Birmingham, B1 2HF, England

      IIF 1

    • Dwr Cymru Welsh Water, Linea, Fortran Road, St. Mellons, Cardiff, CF3 0LT, Wales

      IIF 2 IIF 3

    • Unit 4, Potteric Carr Industrial Estate, Potteric Carr Road, Doncaster, DN4 5NP, England

      IIF 4

    • 11, Hanover Square, London, W1S 1JJ, England

      IIF 5 IIF 6 IIF 7

    • 2nd Floor, 1 Lindsey Street, Lindsey Street, London, EC1A 9HP, England

      IIF 8 IIF 9 IIF 10

    • 2nd Floor, 1 Lindsey Street, London, EC1A 9HP, England

      IIF 15 IIF 16 IIF 17

    • Aureos Infrastructure Services, 2nd Floor, 1 Lindsey St, Barbican, London, EC1A 9HP, England

      IIF 19

    • 34, Mountain Road, Craig-cefn-parc, Clydach, Swansea, SA6 5RH, United Kingdom

      IIF 20
  • James, Darren Glyn
    British chartered civil engineer born in June 1967

    Resident in Wales

    Registered addresses and corresponding companies
  • James, Darren Glyn
    British company director born in June 1967

    Resident in Wales

    Registered addresses and corresponding companies
  • James, Darren Glyn
    British director born in June 1967

    Resident in Wales

    Registered addresses and corresponding companies

    • St. Andrews House, Portsmouth Road, Esher, KT10 9TA, England

      IIF 39 IIF 40 IIF 41

    • St. Andrews House, Portsmouth Road, Esher, Surrey, KT10 9TA, England

      IIF 43

    • Costain House, Vanwall Business Park, Maidenhead, Berkshire, SL6 4UB

      IIF 44

    • Costain House, Vanwall Business Park, Maidenhead, Berkshire, SL6 4UB, England

      IIF 45
  • Mr Darren Glyn James
    British born in June 1967

    Resident in Wales

    Registered addresses and corresponding companies

    • St. Andrews House, Portsmouth Road, Esher, KT10 9TA, England

      IIF 46
child relation
Offspring entities and appointments
Active 21
  • 1
    AS DESIGN & ENGINEERING LIMITED
    10490414
    Aureos Infrastructure Services 2nd Floor, 1 Lindsey St, Barbican, London, England
    Active Corporate (7 parents)
    Equity (Company account)
    497,120 GBP2024-11-30
    Officer
    2025-06-09 ~ now
    IIF 19 - Director → ME
  • 2
    AUREOS ENERGY LIMITED
    - now 12930461
    KELTBRAY ENERGY LIMITED
    - 2024-12-20 12930461
    KELTBRAY INFRASTRUCTURE LIMITED - 2020-10-26 14882565
    2nd Floor, 1 Lindsey Street, Lindsey Street, London, England
    Active Corporate (6 parents, 6 offsprings)
    Officer
    2020-10-28 ~ now
    IIF 10 - Director → ME
  • 3
    AUREOS HIGHWAYS LIMITED
    - now 12788652
    KELTBRAY HIGHWAYS LIMITED
    - 2024-12-20 12788652
    AK HIGHWAYS LIMITED
    - 2021-10-08 12788652
    2nd Floor, 1 Lindsey Street, Lindsey Street, London, England
    Active Corporate (5 parents)
    Officer
    2021-10-07 ~ now
    IIF 14 - Director → ME
  • 4
    AUREOS INFRASTRUCTURE MANAGEMENT SERVICES LIMITED
    - now 15576040
    KELTBRAY INFRASTRUCTURE MANAGEMENT SERVICES LIMITED
    - 2024-12-20 15576040
    2nd Floor, 1 Lindsey Street, Lindsey Street, London, England
    Active Corporate (5 parents)
    Officer
    2024-03-19 ~ now
    IIF 9 - Director → ME
  • 5
    AUREOS INFRASTRUCTURE PLANT LIMITED
    - now 14882585
    KELTBRAY INFRASTRUCTURE PLANT LIMITED
    - 2025-01-27 14882585
    2nd Floor, 1 Lindsey Street, Lindsey Street, London, England
    Active Corporate (5 parents)
    Profit/Loss (Company account)
    -2,592,134 GBP2023-05-19 ~ 2024-10-31
    Officer
    2023-05-19 ~ now
    IIF 11 - Director → ME
  • 6
    AUREOS INFRASTRUCTURE SERVICES LIMITED
    - now 14882565
    KELTBRAY INFRASTRUCTURE SERVICES LIMITED
    - 2024-12-20 14882565 12930461
    2nd Floor, 1 Lindsey Street, Lindsey Street, London, England
    Active Corporate (5 parents, 7 offsprings)
    Officer
    2023-05-19 ~ now
    IIF 13 - Director → ME
  • 7
    AUREOS RAIL LIMITED
    - now 06000882
    KELTBRAY RAIL LIMITED
    - 2025-01-21 06000882
    KELTBRAY ASPIRE LIMITED
    - 2020-10-26 06000882
    KELTBRAY ASPIRE RAIL LIMITED - 2018-03-10
    ASPIRE RAIL CONSULTANTS LIMITED - 2010-11-08
    2nd Floor, 1 Lindsey Street, Lindsey Street, London, England
    Active Corporate (5 parents)
    Officer
    2020-09-11 ~ now
    IIF 8 - Director → ME
  • 8
    AUREOS TECHNICAL SOLUTIONS LIMITED
    - now 06696437
    WENTWORTH HOUSE RAIL SYSTEMS LIMITED
    - 2025-01-21 06696437
    KELTBRAY MARINE SERVICES LIMITED - 2012-03-15
    2nd Floor, 1 Lindsey Street, Lindsey Street, London, England
    Active Corporate (5 parents)
    Officer
    2020-10-28 ~ now
    IIF 12 - Director → ME
  • 9
    CRUMLIN CAPITAL NO. 2 LIMITED
    12543393
    St. Andrews House, Portsmouth Road, Esher, England
    Dissolved Corporate (7 parents)
    Officer
    2022-03-09 ~ dissolved
    IIF 39 - Director → ME
  • 10
    DWR CYMRU CYFYNGEDIG
    02366777
    Dwr Cymru Welsh Water Linea, Fortran Road, St. Mellons, Cardiff, Wales
    Active Corporate (11 parents, 3 offsprings)
    Officer
    2025-01-01 ~ now
    IIF 3 - Director → ME
  • 11
    ELECTRICITYWORX LTD
    - now NI624452
    IRISH POWER CONSTRUCTION LIMITED - 2016-01-25
    Ecos Centre, Kernohans Lane, Ballymena, Northern Ireland
    Active Corporate (8 parents)
    Total Assets Less Current Liabilities (Company account)
    155,673 GBP2016-05-31
    Officer
    2024-08-15 ~ now
    IIF 16 - Director → ME
  • 12
    ENERGYLINE LIMITED
    04362423
    Jubilee Court, Copgrove, Harrogate, England
    Active Corporate (8 parents)
    Equity (Company account)
    732,119 GBP2025-03-31
    Officer
    2025-09-17 ~ now
    IIF 17 - Director → ME
  • 13
    GA CONSTRUCTION (HIGHLANDS) LTD
    SC259027
    6 Inchmuir Road, Whitehill Industrial Estate, Bathgate, Scotland
    Active Corporate (7 parents)
    Equity (Company account)
    1,198,337 GBP2024-11-30
    Officer
    2025-04-14 ~ now
    IIF 18 - Director → ME
  • 14
    GLAS CYMRU HOLDINGS CYFYNGEDIG
    09917809 10082803, 03975719, 04129132... (more)
    Dwr Cymru Welsh Water Linea, Fortran Road, St. Mellons, Cardiff, Wales
    Active Corporate (10 parents, 2 offsprings)
    Officer
    2025-01-01 ~ now
    IIF 2 - Director → ME
  • 15
    HELIX WORKFLO LIMITED
    - now 11370722
    HELIX RAIL LIMITED
    - 2025-05-14 11370722
    2nd Floor 1 Lindsey Street, London, England
    Active Corporate (6 parents)
    Equity (Company account)
    66,757 GBP2024-08-31
    Officer
    2025-03-26 ~ now
    IIF 15 - Director → ME
  • 16
    OSPREY BIDCO LIMITED
    15819536
    11 Hanover Square, London, England
    Active Corporate (10 parents, 1 offspring)
    Officer
    2024-08-15 ~ now
    IIF 7 - Director → ME
  • 17
    OSPREY DEBTCO LIMITED
    15868953
    11 Hanover Square, London, England
    Active Corporate (10 parents, 1 offspring)
    Officer
    2024-08-15 ~ now
    IIF 5 - Director → ME
  • 18
    OSPREY INFRASTRUCTURE SERVICES LIMITED
    15489635
    St. Andrews House, Portsmouth Road, Esher, England
    Dissolved Corporate (2 parents)
    Officer
    2024-02-14 ~ dissolved
    IIF 41 - Director → ME
    Person with significant control
    2024-02-14 ~ dissolved
    IIF 46 - Ownership of shares – More than 25% but not more than 50% → OE
    IIF 46 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 46 - Right to appoint or remove directors → OE
  • 19
    OSPREY MIDCO LIMITED
    15819379
    11 Hanover Square, London, England
    Active Corporate (9 parents, 1 offspring)
    Officer
    2024-08-15 ~ now
    IIF 6 - Director → ME
  • 20
    RAILWAY INDUSTRY ASSOCIATION
    10036044
    Kings Buildings, 16 Smith Square, London, England
    Active Corporate (13 parents)
    Profit/Loss (Company account)
    -1,321,181 GBP2023-04-01 ~ 2024-03-31
    Officer
    2016-03-01 ~ now
    IIF 20 - Director → ME
  • 21
    RAPIDE A POWERLINES INEO KELTBRAY JOINT VENTURE LTD
    - now 12727835
    BIGGER VIEW BUILDING LIMITED - 2020-10-06
    Unit 4 Potteric Carr Road, Doncaster, England
    Active Corporate (5 parents)
    Equity (Company account)
    1 GBP2024-07-31
    Officer
    2021-09-17 ~ now
    IIF 4 - Director → ME
Ceased 24
  • 1
    ABC ELECTRIFICATION LTD
    08193420
    Alstom, Litchurch Lane, Derby, England
    Active Corporate (10 parents)
    Officer
    2012-08-29 ~ 2013-12-19
    IIF 1 - Director → ME
  • 2
    COSTAIN INTEGRATED TECHNOLOGY SOLUTIONS LIMITED
    - now 01439838
    SIMULATION SYSTEMS LIMITED
    - 2016-07-15 01439838
    Seventh Floor, 70 St Mary Axe, London, United Kingdom
    Active Corporate (4 parents)
    Officer
    2016-07-05 ~ 2020-03-31
    IIF 45 - Director → ME
  • 3
    COSTAIN LIMITED
    - now 00610201
    COSTAIN CIVIL ENGINEERING LIMITED - 1999-06-24 02757907
    Seventh Floor, 70 St Mary Axe, London, United Kingdom
    Active Corporate (8 parents, 14 offsprings)
    Officer
    2008-07-10 ~ 2020-03-31
    IIF 21 - Director → ME
  • 4
    COSTAIN OIL, GAS & PROCESS LIMITED
    - now 00786418
    LAND & MARINE ENGINEERING LIMITED - 1991-10-30
    LAND & MARINE ENGINEERING (HOLDINGS) LIMITED - 1984-03-01
    LAND & MARINE ENGINEERING LIMITED - 1983-11-23
    Seventh Floor, 70 St Mary Axe, London, United Kingdom
    Active Corporate (5 parents, 1 offspring)
    Officer
    2016-01-06 ~ 2020-03-31
    IIF 44 - Director → ME
  • 5
    HIPER ENERGY LIMITED
    14314057
    St. Andrews House, Portsmouth Road, Esher, England
    Active Corporate (6 parents)
    Equity (Company account)
    1 GBP2024-10-31
    Officer
    2022-08-23 ~ 2024-08-15
    IIF 42 - Director → ME
  • 6
    HIPER PILE LIMITED
    14314100
    St. Andrews House, Portsmouth Road, Esher, England
    Active Corporate (7 parents)
    Equity (Company account)
    1 GBP2023-08-31
    Officer
    2022-08-23 ~ 2024-08-15
    IIF 40 - Director → ME
  • 7
    KELTBRAY (BE) HOLDINGS LIMITED
    14882549
    St. Andrews House, Portsmouth Road, Esher, Surrey, England
    Active Corporate (5 parents, 1 offspring)
    Profit/Loss (Company account)
    -6,522,904 GBP2023-05-19 ~ 2024-10-31
    Officer
    2023-05-19 ~ 2024-08-15
    IIF 43 - Director → ME
  • 8
    KELTBRAY BUILT ENVIRONMENT LIMITED
    - now 12548732
    KELTBRAY DEMOLITION AND CIVIL ENGINEERING LIMITED
    - 2020-11-12 12548732
    St. Andrews House, Portsmouth Road, Esher, England
    Active Corporate (7 parents)
    Equity (Company account)
    11,438,405 GBP2024-10-31
    Officer
    2020-10-28 ~ 2024-08-15
    IIF 31 - Director → ME
  • 9
    KELTBRAY CONSULTING & ENGINEERING LIMITED
    12932398
    St. Andrews House, Portsmouth Road, Esher, England
    Active Corporate (6 parents, 1 offspring)
    Equity (Company account)
    8,001 GBP2024-10-31
    Officer
    2020-10-27 ~ 2024-08-15
    IIF 28 - Director → ME
  • 10
    KELTBRAY ENVIRONMENTAL LTD
    - now 06564049 02051681
    KELTBRAY HUNT LIMITED - 2011-10-27
    St Andrew's House, Portsmouth Road, Esher, Surrey
    Active Corporate (4 parents)
    Equity (Company account)
    673,867 GBP2024-10-31
    Officer
    2020-10-28 ~ 2024-08-15
    IIF 37 - Director → ME
  • 11
    KELTBRAY ENVIRONMENTAL MATERIALS MANAGEMENT LIMITED
    - now 06872836
    KELTBRAY GOLF ENVIRONMENTAL LIMITED - 2013-11-05
    GOLF ENVIRONMENTAL LIMITED - 2011-01-12 09283260, 08807315
    GOLF STRATEGIES (HAINAULT) LIMITED - 2010-02-03
    St Andrews House, Portsmouth Road, Esher, Surrey
    Active Corporate (4 parents)
    Equity (Company account)
    38,070 GBP2024-10-31
    Officer
    2020-10-28 ~ 2021-06-30
    IIF 36 - Director → ME
  • 12
    KELTBRAY GROUP (HOLDINGS) LIMITED
    - now 02810840 01675402
    ECONOMIC PLANT LIMITED - 2001-08-24 01675402, 01675402, 01675402... (more)
    ORMSIDE CONTRACTORS LIMITED - 2000-11-20
    St Andrew's House, Portsmouth Road, Esher, Surrey
    Active Corporate (4 parents, 4 offsprings)
    Equity (Company account)
    Retained earnings (accumulated losses)
    2,361,078 GBP2022-11-01
    Officer
    2020-06-24 ~ 2021-06-30
    IIF 35 - Director → ME
  • 13
    KELTBRAY HOLDINGS LIMITED
    12543807
    St. Andrews House, Portsmouth Road, Esher, England
    Active Corporate (5 parents, 3 offsprings)
    Equity (Company account)
    18,647,502 GBP2024-10-31
    Officer
    2020-10-28 ~ 2024-08-15
    IIF 29 - Director → ME
  • 14
    KELTBRAY LIMITED
    01274344 06771858
    St Andrew's House, Portsmouth Road, Esher, Surrey
    Active Corporate (4 parents, 4 offsprings)
    Equity (Company account)
    -23,142,875 GBP2024-10-31
    Officer
    2020-10-27 ~ 2021-06-30
    IIF 34 - Director → ME
  • 15
    KELTBRAY MANAGEMENT SERVICES LIMITED
    12932693
    St. Andrews House, Portsmouth Road, Esher, England
    Active Corporate (9 parents, 1 offspring)
    Equity (Company account)
    691,309 GBP2024-10-31
    Officer
    2020-10-28 ~ 2024-08-15
    IIF 30 - Director → ME
  • 16
    KELTBRAY PLANT LIMITED
    - now 01675402
    ECONOMIC PLANT LIMITED - 2001-11-01 02810840, 02810840, 02810840... (more)
    KELTBRAY GROUP (HOLDINGS) LIMITED - 2001-08-24 02810840
    ECONOMIC PLANT LIMITED - 2000-11-20 02810840, 02810840, 02810840... (more)
    St. Andrew's House, Portsmouth Road, Esher, Surrey
    Active Corporate (4 parents, 1 offspring)
    Equity (Company account)
    1,375,901 GBP2024-10-31
    Officer
    2020-10-28 ~ 2024-08-15
    IIF 32 - Director → ME
  • 17
    KELTBRAY STRUCTURES LIMITED
    10325243
    St Andrew's House, Portsmouth Road, Esher, Surrey, United Kingdom
    Active Corporate (4 parents)
    Equity (Company account)
    -377,704 GBP2024-10-31
    Officer
    2020-10-28 ~ 2021-06-30
    IIF 38 - Director → ME
  • 18
    KERR PROPERTY HOLDINGS LIMITED
    NI644170
    38-40 Bank Street, Belfast, Northern Ireland
    Active Corporate (8 parents, 3 offsprings)
    Profit/Loss (Company account)
    -464,151 GBP2023-11-01 ~ 2024-10-31
    Officer
    2020-10-28 ~ 2024-08-15
    IIF 27 - Director → ME
  • 19
    PROMANEX (CIVILS & INDUSTRIAL SERVICES) LIMITED
    - now 02224393 06427724
    JEFCO SERVICES LIMITED - 2008-05-29 06427724
    JEFCO CONSTRUCTION LIMITED - 1990-10-29
    Seventh Floor, 70 St Mary Axe, London, United Kingdom
    Dissolved Corporate (4 parents)
    Officer
    2011-08-20 ~ 2020-03-31
    IIF 24 - Director → ME
  • 20
    PROMANEX (CONSTRUCTION & MAINTENANCE SERVICES) LIMITED
    - now 03548978 06427708
    THERMAL ENERGY CONSTRUCTION LIMITED - 2009-01-22 06427708
    Seventh Floor, 70 St Mary Axe, London, United Kingdom
    Dissolved Corporate (4 parents)
    Officer
    2011-08-20 ~ 2020-03-31
    IIF 26 - Director → ME
  • 21
    PROMANEX (TOTAL FM & ENVIRONMENTAL SERVICES) LIMITED
    - now 03230494 06427711
    PROMANEX LIMITED - 2008-05-29 06427711
    BAWOL SERVICES LIMITED - 1996-08-28
    Seventh Floor, 70 St Mary Axe, London, United Kingdom
    Dissolved Corporate (4 parents)
    Officer
    2011-08-20 ~ 2020-03-31
    IIF 25 - Director → ME
  • 22
    PROMANEX GROUP HOLDINGS LIMITED
    - now 05933523
    HAMSARD 3024 LIMITED - 2007-04-27 06778337, 11013245, 16103206... (more)
    Costain House, Vanwall Business Park, Maidenhead, Berkshire
    Dissolved Corporate (4 parents, 1 offspring)
    Officer
    2011-08-20 ~ 2020-03-31
    IIF 23 - Director → ME
  • 23
    PROMANEX GROUP LIMITED
    03895753
    Costain House, Vanwall Business Park, Maidenhead, Berkshire
    Dissolved Corporate (4 parents)
    Officer
    2011-08-20 ~ 2020-03-31
    IIF 22 - Director → ME
  • 24
    WENTWORTH HOUSE PARTNERSHIP LIMITED
    03673466
    St. Andrew's House, Portsmouth Road, Esher, Surrey
    Active Corporate (6 parents)
    Equity (Company account)
    3,093,160 GBP2024-10-31
    Officer
    2020-10-27 ~ 2024-08-15
    IIF 33 - Director → ME

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