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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

Mr Sean O'sullivan

    Related profiles found in government register
  • Mr Sean O'sullivan
    British born in November 1974

    Resident in United Kingdom

    Registered addresses and corresponding companies

    • Unit 38, Neath Abbey Business Park, Neath Abbey, Neath, West Glamorgan, SA10 7DR, Wales

      IIF 1
  • Mr Sean O'sullivan
    British born in November 1974

    Resident in Wales

    Registered addresses and corresponding companies

    • Unit 38, Neath Abbey Business Park, Neath Abbey, Neath, SA10 7DR, Wales

      IIF 2

    • Unit 38, Neath Abbey Business Park, Neath Abbey, Neath, West Glamorgan, SA10 7DR, Wales

      IIF 3
  • Mr Sean Alexander O'sullivan
    British born in November 1974

    Resident in Wales

    Registered addresses and corresponding companies

    • 4, Sunnycroft Lane, Dinas Powys, CF64 4QQ, Wales

      IIF 4

    • Unit 1b, Whitehouse, The Causeway, Mark, TA9 4QS, United Kingdom

      IIF 5

    • Unit 38, Neath Abbey Business Park, Neath Abbey, Neath, West Glamorgan, SA10 7DR, Wales

      IIF 6

    • Unit 38, Neath Abbey Business Park, Neath Abbey, Neath, SA10 7DR, United Kingdom

      IIF 7

    • Pac, Penarth Athletic Club, Lavernock Rd, Penarth, Vale Of Glamorgam, CF64 3QH, United Kingdom

      IIF 8

    • Canal Rd, Swansea, SA11 1LJ, United Kingdom

      IIF 9
  • O'sullivan, Sean
    British born in November 1974

    Resident in Wales

    Registered addresses and corresponding companies

    • 65 Corporation Road, Grangetown, Cardiff, South Glamorgan, CF11 7AP

      IIF 10

    • Unit 38, Neath Abbey Business Park, Neath Abbey, Neath, SA10 7DR, Wales

      IIF 11

    • Unit 38, Neath Abbey Business Park, Neath Abbey, Neath, West Glamorgan, SA10 7DR, Wales

      IIF 12
  • O'sullivan, Sean
    British director born in November 1974

    Resident in Wales

    Registered addresses and corresponding companies

    • 65, Corporation Road, Grangetown, Cardiff, CF11 7AP, United Kingdom

      IIF 13

    • 65 Corporation Road, Grangetown, Cardiff, South Glamorgan, CF11 7AP

      IIF 14
  • O'sullivan, Sean
    British engineer born in November 1974

    Resident in Wales

    Registered addresses and corresponding companies

    • 65 Corporation Road, Grangetown, Cardiff, South Glamorgan, CF11 7AP

      IIF 15
  • O'sullivan, Sean Alexander
    British born in November 1974

    Resident in Wales

    Registered addresses and corresponding companies

    • 4, Sunnycroft Lane, Dinas Powys, CF64 4QQ, Wales

      IIF 16

    • 4 Sunnycroft Lane, Dinas Powys, South Glamorgan, CF64 4QQ, Wales

      IIF 17 IIF 18 IIF 19

    • Unit 1a, Whitehouse, The Causeway, Mark, Highbridge, Somerset, TA9 4QS, England

      IIF 20

    • Unit 38, Neath Abbey Business Park, Neath Abbey, Neath, SA10 7DR, United Kingdom

      IIF 21

    • Pac, Penarth Athletic Club, Lavernock Rd, Penarth, Vale Of Glamorgam, CF64 3QH, United Kingdom

      IIF 22
  • O'sullivan, Sean Alexander
    British engineer born in November 1974

    Resident in Wales

    Registered addresses and corresponding companies

    • Unit 38, Neath Abbey Business Park, Neath Abbey, Neath, West Glamorgan, SA10 7DR, Wales

      IIF 23
  • O'sullivan, Sean
    British director

    Registered addresses and corresponding companies

    • 65 Corporation Road, Grangetown, Cardiff, South Glamorgan, CF11 7AP

      IIF 24
  • O'sullivan, Sean
    British engineer

    Registered addresses and corresponding companies

    • 65 Corporation Road, Grangetown, Cardiff, South Glamorgan, CF11 7AP

      IIF 25
child relation
Offspring entities and appointments 14
  • 1
    ARMCHAIR LETTINGS LTD
    12873686
    4 Sunnycroft Lane, Dinas Powys, South Glamorgan, Wales
    Active Corporate (5 parents)
    Officer
    2020-09-11 ~ now
    IIF 19 - Director → ME
  • 2
    CONCRETE STRUCTURES & FLOORS LTD
    07917725
    Unit 38 Neath Abbey Business Park, Neath Abbey, Neath, West Glamorgan, Wales
    Active Corporate (5 parents)
    Officer
    2015-08-21 ~ now
    IIF 12 - Director → ME
    Person with significant control
    2016-04-06 ~ now
    IIF 6 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 6 - Right to appoint or remove directors → OE
    IIF 6 - Ownership of shares – More than 25% but not more than 50% → OE
  • 3
    DARTHVARK HOLDINGS LIMITED
    14009613
    Unit 38 Neath Abbey Business Park, Neath Abbey, Neath, United Kingdom
    Active Corporate (1 parent, 1 offspring)
    Officer
    2022-03-29 ~ now
    IIF 21 - Director → ME
    Person with significant control
    2022-03-29 ~ now
    IIF 7 - Right to appoint or remove directors → OE
    IIF 7 - Ownership of voting rights - 75% or more → OE
    IIF 7 - Ownership of shares – 75% or more → OE
  • 4
    DARTHVARK PROPERTIES LTD
    16774852
    Unit 38 Neath Abbey Business Park, Neath Abbey, Neath, Wales
    Active Corporate (3 parents)
    Officer
    2025-10-09 ~ now
    IIF 11 - Director → ME
    Person with significant control
    2025-10-09 ~ now
    IIF 2 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 2 - Ownership of shares – More than 25% but not more than 50% → OE
    IIF 2 - Right to appoint or remove directors → OE
  • 5
    H.O.S. CONSTRUCTION LTD
    05014941
    Griffins Tavistock House South, Tavistock Square, London
    Dissolved Corporate (6 parents)
    Officer
    2004-05-01 ~ dissolved
    IIF 15 - Director → ME
    2004-05-01 ~ dissolved
    IIF 25 - Secretary → ME
  • 6
    H.O.S. HIRE LIMITED
    05342935
    Unit 38 Neath Abbey Business Park, Neath Abbey, Neath, West Glamorgan, Wales
    Active Corporate (6 parents)
    Officer
    2005-01-26 ~ now
    IIF 10 - Director → ME
    Person with significant control
    2016-06-30 ~ now
    IIF 3 - Ownership of shares – 75% or more → OE
    IIF 3 - Right to appoint or remove directors as a member of a firm → OE
    IIF 3 - Ownership of voting rights - 75% or more → OE
    IIF 3 - Has significant influence or control as a member of a firm → OE
  • 7
    H.O.S. LIMITED
    06498087
    Hos/js Jones, Canal Road, Neath
    Dissolved Corporate (5 parents)
    Officer
    2008-02-08 ~ dissolved
    IIF 14 - Director → ME
    2008-02-08 ~ dissolved
    IIF 24 - Secretary → ME
  • 8
    HOS (CIVILS) LTD
    06857135
    10 St Helens Road, Swansea
    Dissolved Corporate (3 parents)
    Officer
    2010-03-24 ~ dissolved
    IIF 13 - Director → ME
    Person with significant control
    2016-04-06 ~ dissolved
    IIF 9 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 9 - Ownership of shares – More than 25% but not more than 50% → OE
    IIF 9 - Right to appoint or remove directors → OE
  • 9
    OSCHA HOLDINGS LTD
    12873525
    4 Sunnycroft Lane, Dinas Powys, South Glamorgan, Wales
    Active Corporate (4 parents, 2 offsprings)
    Officer
    2020-09-11 ~ now
    IIF 18 - Director → ME
  • 10
    PENARTH RFC LTD
    13464243
    Pac Penarth Athletic Club, Lavernock Rd, Penarth, Vale Of Glamorgam, United Kingdom
    Active Corporate (3 parents)
    Officer
    2021-06-18 ~ now
    IIF 22 - Director → ME
    Person with significant control
    2021-06-18 ~ now
    IIF 8 - Right to appoint or remove directors → OE
  • 11
    POOLDESIGNANDBUILD LTD
    14203557
    Unit 1b Whitehouse, The Causeway, Mark, United Kingdom
    Active Corporate (3 parents)
    Officer
    2022-06-29 ~ 2026-01-29
    IIF 16 - Director → ME
    Person with significant control
    2023-11-08 ~ now
    IIF 5 - Ownership of shares – More than 25% but not more than 50% → OE
    IIF 5 - Ownership of voting rights - More than 25% but not more than 50% → OE
    2022-06-29 ~ 2023-12-08
    IIF 4 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 4 - Ownership of shares – More than 25% but not more than 50% → OE
  • 12
    PRIMERA FILA LTD
    12873679
    4 Sunnycroft Lane, Dinas Powys, South Glamorgan, Wales
    Active Corporate (5 parents)
    Officer
    2020-09-11 ~ now
    IIF 17 - Director → ME
  • 13
    SOUTHERN PROFILES LIMITED
    15243917
    Unit 1a, Whitehouse, The Causeway, Mark, Somerset
    Active Corporate (3 parents)
    Officer
    2023-11-20 ~ 2025-11-30
    IIF 20 - Director → ME
  • 14
    TESSELLFORM LTD
    09969864
    Unit 38 Neath Abbey Business Park, Neath Abbey, Neath, West Glamorgan, Wales
    Dissolved Corporate (2 parents)
    Officer
    2016-01-26 ~ dissolved
    IIF 23 - Director → ME
    Person with significant control
    2016-04-06 ~ dissolved
    IIF 1 - Ownership of voting rights - More than 25% but not more than 50% → OE
    IIF 1 - Ownership of shares – More than 25% but not more than 50% → OE
    IIF 1 - Right to appoint or remove directors → OE

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Contains public sector information retrieved at 22 March 2026 and licensed under the Open Government Licence v3.0.