CADELER UK LIMITED
CADELER UK LIMITED is a private limited company registered in England and Wales under company number 06106237. It was incorporated on 15 February 2007, initially as SOUTHSTONE LIMITED, before adopting the name SEAJACKS UK LIMITED on 23 April 2007 and its current name on 3 March 2025, and is recorded as active on the Companies House register as of 23 September 2026. The company’s registered office is at Avocet Court, 8 Central Avenue, St Andrews Business Park, Norwich, NR7 0HR, and Companies House classifies its principal activity under SIC code 42220, construction of utility projects for electricity and telecommunications.
CADELER UK LIMITED operates as the UK entity of Cadeler, a global offshore wind installation, operations and maintenance business that owns and operates a fleet of jack-up vessels used to transport and install wind turbines and foundations at sea. The UK business traces to Seajacks, a jack-up vessel operator that joined the enlarged Cadeler group when Cadeler A/S completed its combination with Eneti Inc., Seajacks’ former parent, on 19 December 2023. In November 2025, Cadeler announced the relocation of its UK team to a new Norwich office at Avocet Court, the same address recorded on the Companies House register, citing continued growth in UK offshore wind projects. Cadeler A/S, the group’s ultimate parent, is a Danish company listed on the Oslo Stock Exchange under the ticker CADLR and, since the 2023 combination, on the New York Stock Exchange under the ticker CDLR. No turnover or employee figures specific to CADELER UK LIMITED as a standalone legal entity were identified during research.
- Company fundamentals
- Corporate linkage & group structures
- Digitized company financials
- Firmographics — websites, social profiles, revenue and employee estimates
Shareholders
1
Shareholders of CADELER UK LIMITED
Company shareholder register data associated with this profile, verified 22 September 2026, records a single disclosed shareholder in CADELER UK LIMITED: Cadeler International Limited, holding 100% of the company’s issued ordinary shares (1 Ordinary share of £1.00). This is corroborated by Companies House’s persons-with-significant-control register, which names Cadeler International Limited (company number 07964749) as the company’s controlling party, notified 6 April 2016, holding 75% or more of shares and voting rights and the right to appoint or remove directors. No other shareholders or share classes are disclosed.
Ultimate beneficial ownership
CADELER UK LIMITED’s only disclosed person with significant control is Cadeler International Limited, a corporate entity rather than a natural person. Companies House’s PSC regime records the company’s immediate controlling tier; no natural-person ultimate beneficial owner is separately identified for CADELER UK LIMITED in the Companies House record reviewed. Cadeler International Limited is itself controlled, per its own PSC filing, by Cadeler Holdings Limited (07964020), which is in turn controlled by the publicly listed Cadeler A/S (Denmark, registration number 31180503) – see Group structure below for the verified chain.
Data availability
Classification: Full. Companies House’s persons-with-significant-control register and the company’s own shareholder register agree on a single, wholly-owned corporate shareholder structure for CADELER UK LIMITED.
Sources
- Companies House – Persons with Significant Control register, company number 06106237
- Companies House – Company overview, company number 06106237
- Company shareholder register data, verified 22 September 2026
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| CADELER INTERNATIONAL LIMITED | 100% | Companies House |
Officers
20
Directors and officers of CADELER UK LIMITED
Companies House records four active directors and one active corporate secretary for CADELER UK LIMITED as of 23 September 2026. The current directors are Aaron Daniel Beck (appointed 26 February 2024, British nationality, resident in the United Kingdom), Peter Hansen Brogaard (appointed 15 January 2025, Danish nationality, resident in Monaco), Mikkel Gleerup (appointed 15 January 2025, Danish nationality, resident in Monaco) and Alexander Willem Simmonds (appointed 15 January 2025, British nationality, resident in the United Kingdom). Burness Paull LLP, a law firm, is recorded as the company’s corporate secretary, appointed 19 February 2013, with a correspondence address in Edinburgh. This overview reflects Companies House officer data reviewed 23 September 2026.
Recent officer changes
- Aaron Daniel Beck appointed Director, 26 February 2024 (source: Companies House).
- Peter Hansen Brogaard, Mikkel Gleerup and Alexander Willem Simmonds appointed Directors, 15 January 2025, shortly before the company’s rename from Seajacks UK Limited to Cadeler UK Limited on 3 March 2025 (source: Companies House).
Data availability
Classification: Full. Companies House publishes current appointment dates, nationality and country of residence for CADELER UK LIMITED’s active directors; occupation, distinct from legal role, and residential addresses are not separately reported. Burness Paull LLP is disclosed as a corporate officer rather than a natural person.
Sources
- Companies House – Officers list, company number 06106237
Registry feed — rows exactly as filed with Companies House, including entries the profile above does not cover.
Group Structure
Group structure of CADELER UK LIMITED
CADELER UK LIMITED is not an independent company. Companies House’s persons-with-significant-control register names Cadeler International Limited (company number 07964749) as its immediate parent, notified 6 April 2016, holding 75% or more of its shares and voting rights and the right to appoint or remove directors. Cadeler International Limited is itself controlled by Cadeler Holdings Limited (07964020), notified 4 April 2025, which is controlled by Cadeler A/S (Denmark, registration number 31180503), notified 19 December 2023 – the date Cadeler A/S completed its combination with the previously listed Eneti Inc., which had held the equivalent controlling position until then. Cadeler A/S is the group’s ultimate identifiable parent and is publicly listed on the Oslo Stock Exchange (CADLR) and the New York Stock Exchange (CDLR). Group information reviewed 23 September 2026.
Verified corporate relationships
| Entity | Country | Registration number | Relationship | Ownership | Status | Information date |
|---|---|---|---|---|---|---|
| Cadeler International Limited | GB | 07964749 | Immediate parent | 75% or more of shares & voting rights | Active | 6 Apr 2016 (PSC notified) |
| Cadeler Holdings Limited | GB | 07964020 | Indirect parent | 75% or more of shares & voting rights | Active | 4 Apr 2025 (PSC notified) |
| Cadeler A/S | DK | 31180503 | Ultimate parent | 75% or more of shares & voting rights | Active (listed, NYSE: CDLR / OB: CADLR) | 19 Dec 2023 (PSC notified) |
Recent structural changes
- Cadeler A/S became persons-with-significant-control of Cadeler Holdings Limited on 19 December 2023, replacing Eneti Inc., upon completion of the Cadeler A/S–Eneti Inc. business combination (source: Companies House; Cadeler investor relations).
- Cadeler Holdings Limited replaced Atlantis Midco Limited as persons-with-significant-control of Cadeler International Limited on 4 April 2025, an internal group reorganisation of the UK holding chain (source: Companies House).
Data availability
Classification: Full for the verified parent chain. The full ownership chain from CADELER UK LIMITED to its ultimate listed parent, Cadeler A/S, is confirmed through Companies House PSC filings at each tier. CADELER UK LIMITED’s own internal group records additionally reference sister companies and an overseas branch within the wider Cadeler group; these were not independently re-verified against each entity’s own Companies House or foreign-registry filings for this profile and are therefore omitted from the table above.
Sources
- Companies House – Persons with Significant Control register, company numbers 06106237, 07964749 and 07964020
- Companies House – Company overview, company numbers 06106237, 07964749 and 07964020
- Cadeler A/S investor relations – merger completion disclosures, December 2023, ir.cadeler.com
Registry feed — rows exactly as filed with Companies House, including entries the profile above does not cover.
Cadeler A/S
Denmark
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Frequently Asked Questions
What does CADELER UK LIMITED do?
CADELER UK LIMITED (company number 06106237) is a private limited company registered in England and Wales, incorporated 15 February 2007 and registered at Avocet Court, 8 Central Avenue, St Andrews Business Park, Norwich, NR7 0HR; formerly Seajacks UK Limited, it operates as the UK entity of Cadeler, a global offshore wind installation vessel operator, and is classified under SIC code 42220.
Who owns CADELER UK LIMITED?
CADELER UK LIMITED has one disclosed shareholder, Cadeler International Limited, holding 100% of its ordinary shares, confirmed by Companies House's persons-with-significant-control register (notified 6 April 2016).
Who is CADELER UK LIMITED's UBO (Ultimate Beneficial Owner)?
No natural-person ultimate beneficial owner is disclosed; the sole registered person with significant control is the corporate entity Cadeler International Limited, itself controlled up a verified Companies House PSC chain to the listed Cadeler A/S.
What is CADELER UK LIMITED's company registration number?
CADELER UK LIMITED's registration number is 06106237, filed with Companies House in United Kingdom. Its current status on the register is active.
Is CADELER UK LIMITED still an active company?
CADELER UK LIMITED's status on Companies House is listed as active.
When was CADELER UK LIMITED incorporated?
CADELER UK LIMITED was incorporated on 15 February 2007, according to Companies House.
What is CADELER UK LIMITED's registered address?
The registered address on file for CADELER UK LIMITED is Norwich, United Kingdom.
What legal structure is CADELER UK LIMITED registered as?
CADELER UK LIMITED is registered as a Private limited company (Ltd.) in United Kingdom.
Is CADELER UK LIMITED listed on a stock exchange?
CADELER UK LIMITED's shares are not listed; its ultimate parent, Cadeler A/S, is publicly listed on the Oslo Stock Exchange (CADLR) and the New York Stock Exchange (CDLR).
Who are the officers/directors of CADELER UK LIMITED?
Companies House records four active directors as of 23 September 2026 – Aaron Daniel Beck, Peter Hansen Brogaard, Mikkel Gleerup and Alexander Willem Simmonds – plus Burness Paull LLP as corporate secretary.
Does CADELER UK LIMITED have a parent company or subsidiaries?
CADELER UK LIMITED is majority owned by Cadeler International Limited, controlled via Cadeler Holdings Limited by the Danish, NYSE/Oslo-listed Cadeler A/S, per Companies House PSC filings verified at each tier.
Can Zavia monitor changes to CADELER UK LIMITED's ownership over time?
This profile reflects a point-in-time snapshot from Companies House. Zavia's monitoring API can track changes to CADELER UK LIMITED's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access CADELER UK LIMITED's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United Kingdom, so records like CADELER UK LIMITED's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Companies House and was last synced on 25 September 2026.