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Company number
12280960

DIAMOND TRANSMISSION UK LIMITED

Active
✓ Active company on the official register. Next accounts due 31 December 2026.

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
DIAMOND TRANSMISSION UK LIMITED
Company number
12280960
Registered office
71 KINGSWAY, LONDON, WC2B 6ST, UNITED KINGDOM · 37 other companies at this postcode
Company type
Private Limited Company
Incorporated on
24 October 2019
Status
Active
Age
6 years
Nature of business (SIC)
35120 — Transmission of electricity
Accounts — next due
31 Dec 2026
Accounts — last made up to
31 Mar 2025
Confirmation statement — next due
06 Nov 2026
Confirmation statement — last
23 Oct 2025

People with significant control

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

Diamond Transmission Corporation Limited
owns 75–100% of shares · holds 75–100% of voting rights · can appoint and remove directors
Notified 24/10/2019
Dtuk Blk Bidco Holdings Ltd
owns 75–100% of shares · holds 75–100% of voting rights · can appoint and remove directors
Notified 04/12/2024

Corporate structure

Who controls this company, and who they control in turn

2 controllers 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 04/12/2024
Corporate owner owns 75–100% of shares · holds 75–100% of votes · can appoint and remove directors Control ended 04/12/2024 Controls 15 companies

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
04/12/2024 Person with significant control ceased Diamond Transmission Corporation Limited
04/12/2024 Person with significant control added Dtuk Blk Bidco Holdings Ltd
24/10/2019 Person with significant control added Diamond Transmission Corporation Limited

Financial highlights

Parsed from the filed statutory accounts (£ thousands, except employees)

Source: Companies House bulk data filed accounts (iXBRL)
Metric FY2025
Employees (avg) 0

Documents for DIAMOND TRANSMISSION UK 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.

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Data protection register

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

Diamond Transmission UK Limited — WC2B 6ST
Tier 2 · renews 31/10/2026
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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Frequently asked questions

What is the company number of DIAMOND TRANSMISSION UK LIMITED?
According to the official registry, the company number of DIAMOND TRANSMISSION UK LIMITED is 12280960.
Where is DIAMOND TRANSMISSION UK LIMITED registered?
The registered office is 71 KINGSWAY, LONDON, WC2B 6ST, UNITED KINGDOM.
What is the SIC code of DIAMOND TRANSMISSION UK LIMITED?
The nature of business is recorded under SIC code 35120 — Transmission of electricity.
Who controls DIAMOND TRANSMISSION UK LIMITED?
Diamond Transmission Corporation 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 DIAMOND TRANSMISSION UK LIMITED due?
The next annual accounts are due by 31 December 2026, and the last accounts were made up to 31 March 2025.

About DIAMOND TRANSMISSION UK LIMITED (12280960)

DIAMOND TRANSMISSION UK LIMITED is a private limited company incorporated on 24 October 2019 and registered in the United Kingdom under company number 12280960. Its registered office is at 71 KINGSWAY, LONDON, WC2B 6ST, UNITED KINGDOM. The recorded nature of business is transmission of electricity (SIC 35120). The company is currently active , with statutory accounts last made up to 31 March 2025. , and the person with significant control is Diamond Transmission Corporation 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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