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Company number
17034735

LONGBROOK TOPCO LIMITED

Active
✓ Active company on the official register. Next accounts due 16 November 2027.

Company details

London, England Contains OS data © Crown copyright and database right. Contains Royal Mail data © Royal Mail copyright and database right. Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
Registered name
LONGBROOK TOPCO LIMITED
Company number
17034735
Registered office
1 LEADENHALL STREET, LONDON, EC3V 1AB, UNITED KINGDOM · 50 other companies at this postcode
Company type
Private Limited Company
Incorporated on
16 February 2026
Status
Active
Age
0 years
Nature of business (SIC)
66290 — Other activities auxiliary to insurance and pension funding
Accounts — next due
16 Nov 2027
Confirmation statement — next due
01 Mar 2027

What the register says

Facts from the register, with the dates they are filed under. Not a score: what they mean is for you to judge, and every line can be checked against Companies House itself.

Companies House register snapshot, read 02/09/2026.

People with significant control

Beneficial owners holding over 25% of shares, voting rights or the right to appoint directors

Macquarie Infrastructure And Real Assets Investments Limited
owns 75–100% of shares · holds 75–100% of voting rights · can appoint and remove directors
Notified 16/02/2026

Corporate structure

Who controls this company, and who they control in turn

1 controller Drag to move · scroll to zoom · double-click to expand
Company Person Current control Ended

Connections

Corporate owner owns 75–100% of shares · holds 75–100% of votes · can appoint and remove directors Notified 16/02/2026 Controls 9 companies

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
16/02/2026 Person with significant control added Macquarie Infrastructure And Real Assets Investments Limited

Documents for LONGBROOK TOPCO LIMITED

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Company extract£1.99

The full registration record as held today — name, number, status, registered office, company type, previous names, officers, PSC and SIC codes, timestamped for your file.

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Financial statements£3.99

Every figure the company’s own accounts state, across each filed period, with year-on-year movement. Most UK companies file small or micro-entity accounts — a balance sheet and a headcount, no turnover or profit.

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Ownership report£3.99

Who controls the company: persons with significant control, the nature of that control, the ownership graph and every other company those controllers hold.

PDF Order

Data protection register

Registered with the Information Commissioner's Office as a data protection fee payer.

Longbrook Topco Limited — EC3V 1AB
Tier 1 · renews 01/07/2027
ICO entry

The ICO publishes no company number, so this is matched on the registered name and confirmed by the postcode. Check the ICO entry before relying on it.

Get this company via API

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GET /v1/company/gb/17034735
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Frequently asked questions

What is the company number of LONGBROOK TOPCO LIMITED?
According to the official registry, the company number of LONGBROOK TOPCO LIMITED is 17034735.
Where is LONGBROOK TOPCO LIMITED registered?
The registered office is 1 LEADENHALL STREET, LONDON, EC3V 1AB, UNITED KINGDOM.
What is the SIC code of LONGBROOK TOPCO LIMITED?
The nature of business is recorded under SIC code 66290 — Other activities auxiliary to insurance and pension funding.
Who controls LONGBROOK TOPCO LIMITED?
Macquarie Infrastructure And Real Assets Investments Limited is recorded as a person with significant control, and owns 75–100% of shares, holds 75–100% of voting rights, can appoint and remove directors.
When are the next accounts of LONGBROOK TOPCO LIMITED due?
The next annual accounts are due by 16 November 2027.

About LONGBROOK TOPCO LIMITED (17034735)

LONGBROOK TOPCO LIMITED is a private limited company incorporated on 16 February 2026 and registered in the United Kingdom under company number 17034735. Its registered office is at 1 LEADENHALL STREET, LONDON, EC3V 1AB, UNITED KINGDOM. The recorded nature of business is other activities auxiliary to insurance and pension funding (SIC 66290). The company is currently active . , and the person with significant control is Macquarie Infrastructure And Real Assets Investments Limited. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 2 September 2026.

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