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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

Sialvi, Hassan Mustafa

child relation
Offspring entities and appointments 18
  • 1
    ENCYCLIS (CORBY) HOLDCO LIMITED
    15449539
    Floor 4, Lynton House, 7-12 Tavistock Square, London, United Kingdom
    Active Corporate (5 parents, 1 offspring)
    Officer
    2024-08-01 ~ now
    IIF 18 - Secretary → ME
  • 2
    ENCYCLIS (CORBY) HOLDING LIMITED
    15449644
    Floor 4, Lynton House, 7-12 Tavistock Square, London, United Kingdom
    Active Corporate (5 parents, 1 offspring)
    Officer
    2024-08-01 ~ now
    IIF 14 - Secretary → ME
  • 3
    ENCYCLIS (CORBY) LIMITED
    - now 09745143
    COVANTA (CORBY) LIMITED - 2023-02-02
    KSP RENEWABLES LIMITED - 2022-12-20
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (11 parents)
    Officer
    2024-08-01 ~ now
    IIF 5 - Secretary → ME
  • 4
    ENCYCLIS EARLS GATE HOLDCO LIMITED
    - now 11642671
    COVANTA GREEN EARLS GATE HOLDING LIMITED - 2023-02-02
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (16 parents, 1 offspring)
    Officer
    2024-08-01 ~ now
    IIF 8 - Secretary → ME
  • 5
    ENCYCLIS EUROPE INVESTMENTS LIMITED
    - now 11077964 11347827
    COVANTA EUROPE INVESTMENTS LIMITED - 2023-01-27
    COVANTA HOLDING 3 UK LIMITED - 2020-12-22
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (13 parents, 4 offsprings)
    Officer
    2024-08-01 ~ now
    IIF 12 - Secretary → ME
  • 6
    ENCYCLIS IRELAND ASSETS LIMITED
    - now 11082165
    COVANTA EUROPE ASSETS LIMITED - 2023-02-07
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (29 parents)
    Officer
    2025-07-11 ~ now
    IIF 10 - Secretary → ME
  • 7
    ENCYCLIS NEWHURST HOLDCO LIMITED
    - now 12185337
    COVANTA GREEN NEWHURST HOLDING LIMITED - 2023-02-02
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (12 parents, 1 offspring)
    Officer
    2024-07-22 ~ now
    IIF 7 - Secretary → ME
  • 8
    ENCYCLIS PROTOS HOLDCO LIMITED
    - now 11915696
    COVANTA GREEN PROTOS HOLDING LIMITED - 2023-02-02
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (15 parents, 1 offspring)
    Officer
    2024-07-22 ~ now
    IIF 1 - Secretary → ME
  • 9
    ENCYCLIS ROOKERY HOLDCO LIMITED
    - now 11347927
    COVANTA GREEN ROOKERY HOLDING LIMITED - 2023-02-02
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (15 parents, 1 offspring)
    Officer
    2024-07-30 ~ now
    IIF 4 - Secretary → ME
  • 10
    ENCYCLIS UK INVESTMENTS LIMITED
    - now 11347827 11077964
    COVANTA GREEN UK LIMITED - 2023-02-02
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (17 parents, 2 offsprings)
    Officer
    2024-08-01 ~ now
    IIF 11 - Secretary → ME
  • 11
    NEWHURST ERF LIMITED
    12006738
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (24 parents)
    Officer
    2024-07-22 ~ now
    IIF 6 - Secretary → ME
  • 12
    PROTOS CCS HOLDCO 1 LIMITED
    16539016 16538476... (more)
    Floor 4, Lynton House, 7-12 Tavistock Square, London, United Kingdom
    Active Corporate (5 parents, 1 offspring)
    Officer
    2025-06-24 ~ now
    IIF 15 - Secretary → ME
  • 13
    PROTOS CCS HOLDCO 2 LIMITED
    16538931 16538476... (more)
    Floor 4, Lynton House, 7-12 Tavistock Square, London, United Kingdom
    Active Corporate (5 parents, 2 offsprings)
    Officer
    2025-06-24 ~ now
    IIF 16 - Secretary → ME
  • 14
    PROTOS CCS HOLDCO 3 LIMITED
    16538476 16539016... (more)
    Floor 4, Lynton House, 7-12 Tavistock Square, London, United Kingdom
    Active Corporate (5 parents, 2 offsprings)
    Officer
    2025-06-24 ~ now
    IIF 17 - Secretary → ME
  • 15
    PROTOS ERF LIMITED
    11922737
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (19 parents, 1 offspring)
    Officer
    2024-07-22 ~ now
    IIF 9 - Secretary → ME
  • 16
    PROTOS HOLDING LIMITED
    11920987
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (18 parents, 1 offspring)
    Officer
    2024-07-22 ~ now
    IIF 2 - Secretary → ME
  • 17
    ROOKERY SOUTH HOLDING LIMITED
    11347953
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (18 parents, 1 offspring)
    Officer
    2024-07-30 ~ now
    IIF 13 - Secretary → ME
  • 18
    ROOKERY SOUTH LIMITED
    - now 07094843
    COVANTA ROOKERY SOUTH LIMITED - 2018-07-31
    Floor 4, Lynton House, 7-12 Tavistock Square, London, England
    Active Corporate (27 parents)
    Officer
    2024-07-30 ~ now
    IIF 3 - Secretary → ME

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Contains public sector information retrieved at 5 April 2026 and licensed under the Open Government Licence v3.0.