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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 Martin James Swain

    Related profiles found in government register
  • Mr Martin James Swain
    British born in December 1975

    Resident in England

    Registered addresses and corresponding companies
    • 156 Mulgrave Road, Cheam, Sutton, Surrey, SM2 6JS, England

      IIF 1
  • Swain, Martin James
    British born in December 1975

    Resident in England

    Registered addresses and corresponding companies
    • 3rd Floor, South Building, 200 Aldersgate Street, London, EC1A 4HD, England

      IIF 2 IIF 3 IIF 4 (more)(less)
    • 4th Floor, 3 More London Riverside, London, SE1 2AQ, United Kingdom

      IIF 6 IIF 7
    • Octopus Energy Generation, 5th Floor, United Kingdom House, 164-182 Oxford Street, London, W1D 1NN, United Kingdom

      IIF 8
    • Uk House, 5th Floor, 164-182 Oxford Street, London, W1D 1NN, United Kingdom

      IIF 9
    • 18 Riversway Business Village, Navigation Way, Preston, Lancashire, PR2 2YP, United Kingdom

      IIF 10 IIF 11
  • Swain, Martin James
    British company director born in December 1975

    Resident in England

    Registered addresses and corresponding companies
    • 156, Mulgrave Road, Cheam, Sutton, Surrey, SM2 6JS, England

      IIF 12
  • Swain, Martin James
    British consultant born in December 1975

    Resident in England

    Registered addresses and corresponding companies
    • Arun House, Hurst Road, Horsham, West Sussex, RH12 2DN, England

      IIF 13
  • Swain, Martin James
    British born in December 1975

    Resident in United Kingdom

    Registered addresses and corresponding companies
    • 3rd Floor, 1 Tudor Street, London, EC4Y 0AH

      IIF 14
    • 5th-6th Floor, Uk House 164, 182 Oxford St, London, W1D 1NN, England

      IIF 15 IIF 16
    • 5th-6th Floor, Uk House 164, 182 Oxford St, London, W1D 1NN, England

      IIF 17 IIF 18
    • Uk House, 5th Floor, 164-182 Oxford Street, London, W1D 1NN, United Kingdom

      IIF 19 IIF 20 IIF 21 (more)(less)
  • Swain, Martin James
    British

    Registered addresses and corresponding companies
    • Arun House, Hurst Road, Horsham, West Sussex, RH12 2DN, England

      IIF 23
child relation
Offspring entities and appointments 21
  • 1
    ANNO 2017 JOINT HOLDING (UK) LIMITED
    10827562
    8 White Oak Square, London Road, Swanley, Kent, United Kingdom
    Active Corporate (19 parents, 1 offspring)
    Officer
    2025-06-11 ~ now
    IIF 8 - Director → ME
  • 2
    BILBAO OFFSHORE HOLDING LIMITED
    12099853
    18 Riversway Business Village, Navigation Way, Preston, Lancashire, United Kingdom
    Active Corporate (22 parents, 1 offspring)
    Officer
    2025-06-12 ~ now
    IIF 11 - Director → ME
  • 3
    BILBAO OFFSHORE INVESTMENT LIMITED
    12097709
    18 Riversway Business Village, Navigation Way, Preston, Lancashire, United Kingdom
    Active Corporate (23 parents, 1 offspring)
    Officer
    2025-06-12 ~ now
    IIF 10 - Director → ME
  • 4
    CALLISTO OFFSHORE WIND HOLDINGS LIMITED
    14229705 14230318
    4th Floor 3 More London Riverside, London, United Kingdom
    Active Corporate (10 parents, 1 offspring)
    Officer
    2025-07-01 ~ now
    IIF 7 - Director → ME
  • 5
    CALLISTO OFFSHORE WIND LIMITED
    14230318 14229705
    4th Floor 3 More London Riverside, London, United Kingdom
    Active Corporate (9 parents)
    Officer
    2025-07-01 ~ now
    IIF 6 - Director → ME
  • 6
    EAST ANGLIA ONE LIMITED
    07366753
    3rd Floor, 1 Tudor Street, London
    Active Corporate (32 parents)
    Officer
    2026-05-12 ~ now
    IIF 14 - Director → ME
  • 7
    HORNSEA 1 HOLDINGS LIMITED
    11120527 13796747
    5 Howick Place, London
    Active Corporate (33 parents, 2 offsprings)
    Officer
    2026-04-23 ~ now
    IIF 15 - Director → ME
  • 8
    HORNSEA 1 LIMITED
    - now 07640868
    HERON WIND LIMITED - 2017-11-22
    5 Howick Place, London, England
    Active Corporate (51 parents, 2 offsprings)
    Officer
    2026-04-23 ~ now
    IIF 16 - Director → ME
  • 9
    JUPITER INVESTOR HOLDCO LIMITED
    - now 11032246
    GIP III JUPITER INVESTOR HOLDCO LIMITED - 2022-11-02
    HOSTATRAIL LIMITED - 2018-06-19
    3rd Floor, South Building, 200 Aldersgate Street, London, England
    Active Corporate (22 parents, 1 offspring)
    Officer
    2026-04-23 ~ now
    IIF 4 - Director → ME
  • 10
    JUPITER INVESTOR MIDCO LIMITED
    - now 11382923
    GIP III JUPITER INVESTOR MIDCO LIMITED - 2022-11-02
    HOSTAVIEW LIMITED - 2018-06-19
    3rd Floor, South Building, 200 Aldersgate Street, London, England
    Active Corporate (22 parents, 1 offspring)
    Officer
    2026-04-23 ~ now
    IIF 5 - Director → ME
  • 11
    JUPITER INVESTOR TOPCO LIMITED
    - now 11383051
    GIP III JUPITER INVESTOR TOPCO LIMITED - 2022-11-02
    HOSTAWALK LIMITED - 2018-06-19
    3rd Floor, South Building, 200 Aldersgate Street, London, England
    Active Corporate (22 parents, 1 offspring)
    Officer
    2026-04-23 ~ now
    IIF 2 - Director → ME
  • 12
    JUPITER OFFSHORE WIND LIMITED
    - now 11032205
    GIP III JUPITER LIMITED - 2022-11-03
    HOSTAPLACE LIMITED - 2018-06-19
    3rd Floor South Building, 200 Aldersgate Street, London, England
    Active Corporate (24 parents, 1 offspring)
    Officer
    2026-04-23 ~ now
    IIF 3 - Director → ME
  • 13
    MARTIN J SWAIN LIMITED
    08029526
    156 Mulgrave Road, Cheam, Sutton, Surrey
    Dissolved Corporate (1 parent)
    Officer
    2012-04-13 ~ dissolved
    IIF 12 - Director → ME
    Person with significant control
    2016-04-06 ~ dissolved
    IIF 1 - Ownership of shares – 75% or more OE
    IIF 1 - Ownership of voting rights - 75% or more OE
    IIF 1 - Right to appoint or remove directors OE
  • 14
    OCTOPUS PRIMO HOLDCO LIMITED
    15273889
    Uk House, 5th Floor, 164-182 Oxford Street, London, United Kingdom
    Active Corporate (6 parents, 1 offspring)
    Officer
    2025-06-24 ~ now
    IIF 9 - Director → ME
  • 15
    OCTOPUS PRIMO LIMITED
    15276065
    Uk House, 5th Floor, 164-182 Oxford Street, London, United Kingdom
    Active Corporate (5 parents)
    Officer
    2025-07-01 ~ now
    IIF 22 - Director → ME
  • 16
    OCTOPUS PRIMO TOPCO LIMITED
    15272008
    Uk House, 5th Floor, 164-182 Oxford Street, London, United Kingdom
    Active Corporate (5 parents, 1 offspring)
    Officer
    2025-07-01 ~ now
    IIF 20 - Director → ME
  • 17
    OEOW UK HOLDINGS LIMITED
    16304392
    Uk House, 5th Floor, 164-182 Oxford Street, London, United Kingdom
    Active Corporate (4 parents)
    Officer
    2025-03-10 ~ now
    IIF 21 - Director → ME
  • 18
    REIP V WIND HOLDINGS LIMITED
    14990937
    Uk House 5th Floor, 164-182 Oxford Street, London, United Kingdom
    Active Corporate (5 parents)
    Officer
    2025-07-01 ~ now
    IIF 19 - Director → ME
  • 19
    SOUTHWATER BUSINESS RESOURCE CENTRE LIMITED
    03941292
    Arun House, Hurst Road, Horsham, West Sussex
    Dissolved Corporate (5 parents)
    Officer
    2001-03-01 ~ dissolved
    IIF 13 - Director → ME
    2001-03-01 ~ dissolved
    IIF 23 - Secretary → ME
  • 20
    WALNEY EXTENSION HOLDINGS LIMITED
    10899680
    5 Howick Place, London
    Active Corporate (30 parents, 1 offspring)
    Officer
    2025-06-11 ~ now
    IIF 18 - Director → ME
  • 21
    WALNEY EXTENSION LIMITED
    - now 07306956
    DONG ENERGY WALNEY EXTENSION (UK) LTD - 2017-08-21
    5 Howick Place, London, England
    Active Corporate (35 parents)
    Officer
    2025-06-11 ~ now
    IIF 17 - Director → ME

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