MAINPRIZE OFFSHORE LTD
MAINPRIZE OFFSHORE LTD is a Private limited company (Ltd.) registered in United Kingdom under 01408138, and its current status with Companies House is active. The company was incorporated on 9 January 1979 and lists its registered address as Scarborough, United Kingdom. 2 shareholders are on record for MAINPRIZE OFFSHORE LTD, and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Companies House and was last updated on 4 November 2026.
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Shareholders
2
Two shareholders are currently on record for MAINPRIZE OFFSHORE LTD, held on the Confirmation Statement (CS01), filed under the Companies Act 2006.
The largest of these is MAINPRIZE MIDCO LIMITED, holding 50% — the largest recorded stake — followed by MAINPRIZE MIDCO LIMITED at 50%.
Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| MAINPRIZE MIDCO LIMITED | 50% | Companies House |
Officers
5
Four of the 5 officer records shown for MAINPRIZE OFFSHORE LTD are current appointments, filed with Companies House. Robert Mainprize Jnr (appointed 2006-01-04), Robert Marshall (appointed 2025-07-25) and Steven Evans (appointed 2026-01-26) all serve as Director; Sharon Mainprize (appointed 2006-01-04) serves as Company Secretary. The remaining 1 record shown (Robert Mainprize) is a former appointment that has since been resigned.
The register reports 7 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at MAINPRIZE OFFSHORE LTD sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Group Structure
MAINPRIZE OFFSHORE LTD sits 4 levels below its ultimate parent, PROJECT SUMMER TOPCO LIMITED, registered in United Kingdom. Immediately above MAINPRIZE OFFSHORE LTD is MAINPRIZE MIDCO LIMITED, holding 100% as filed in MAINPRIZE OFFSHORE LTD's own shareholder record with Companies House. PROJECT SUMMER TOPCO LIMITED sits further up the chain, a link derived by walking shareholder filings across jurisdictions rather than stated in a single document.
PROJECT SUMMER TOPCO LIMITED
United Kingdom
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Frequently Asked Questions
Who owns MAINPRIZE OFFSHORE LTD?
Two shareholders are currently on record for MAINPRIZE OFFSHORE LTD, held on the Confirmation Statement (CS01), filed under the Companies Act 2006. The largest of these is MAINPRIZE MIDCO LIMITED, holding 50% — the largest recorded stake — followed by MAINPRIZE MIDCO LIMITED at 50%. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is MAINPRIZE OFFSHORE LTD's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for MAINPRIZE OFFSHORE LTD is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does MAINPRIZE OFFSHORE LTD have on record?
2 shareholders are shown on record for MAINPRIZE OFFSHORE LTD.
What is MAINPRIZE OFFSHORE LTD's company registration number?
MAINPRIZE OFFSHORE LTD's registration number is 01408138, filed with Companies House in United Kingdom. Its current status on the register is active.
Is MAINPRIZE OFFSHORE LTD still an active company?
MAINPRIZE OFFSHORE LTD's status on Companies House is listed as active.
When was MAINPRIZE OFFSHORE LTD incorporated?
MAINPRIZE OFFSHORE LTD was incorporated on 9 January 1979, according to Companies House.
What is MAINPRIZE OFFSHORE LTD's registered address?
The registered address on file for MAINPRIZE OFFSHORE LTD is Scarborough, United Kingdom.
What legal structure is MAINPRIZE OFFSHORE LTD registered as?
MAINPRIZE OFFSHORE LTD is registered as a Private limited company (Ltd.) in United Kingdom.
Who are the officers/directors of MAINPRIZE OFFSHORE LTD?
Four of the 5 officer records shown for MAINPRIZE OFFSHORE LTD are current appointments, filed with Companies House. Robert Mainprize Jnr (appointed 2006-01-04), Robert Marshall (appointed 2025-07-25) and Steven Evans (appointed 2026-01-26) all serve as Director; Sharon Mainprize (appointed 2006-01-04) serves as Company Secretary. The remaining 1 record shown (Robert Mainprize) is a former appointment that has since been resigned. Management authority at MAINPRIZE OFFSHORE LTD sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does MAINPRIZE OFFSHORE LTD have a parent company or subsidiaries?
MAINPRIZE OFFSHORE LTD sits 4 levels below its ultimate parent, PROJECT SUMMER TOPCO LIMITED, registered in United Kingdom.
Can Zavia monitor changes to MAINPRIZE OFFSHORE LTD's ownership over time?
This profile reflects a point-in-time snapshot from Companies House. Zavia's monitoring API can track changes to MAINPRIZE OFFSHORE LTD's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access MAINPRIZE OFFSHORE LTD'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 MAINPRIZE OFFSHORE LTD'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 4 November 2026.