opendata.bot
Company number
14830471

PROTONERA LTD

Active
✓ Active company on the official register. Next accounts due 31 January 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
PROTONERA LTD
Company number
14830471
Registered office
SCALE SPACE, 58 WOOD LANE, LONDON, W12 7RZ, ENGLAND · 143 other companies at this postcode
Company type
Private Limited Company
Incorporated on
26 April 2023
Status
Active
Age
3 years
Nature of business (SIC)
72190 — Other research and experimental development on natural sciences and engineering
Accounts — next due
31 Jan 2027
Accounts — last made up to
30 Apr 2025
Confirmation statement — next due
22 May 2027
Confirmation statement — last
08 May 2026

People with significant control

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

Chengzhi Guo
owns 25–50% of shares · holds 25–50% of voting rights · can appoint and remove directors
Notified 26/04/2023
Professor Erwin Reisner
owns 25–50% of shares · holds 25–50% of voting rights
Notified 21/01/2024
Subhajit Bhattacharjee
owns 25–50% of shares · holds 25–50% of voting rights
Notified 26/04/2023

Corporate structure

Who controls this company, and who they control in turn

3 controllers Drag to move · scroll to zoom · double-click to expand
Company Person Current control Ended

Connections

Chengzhi Guo
born 01/1998 · England owns 25–50% of shares · holds 25–50% of votes · can appoint and remove directors Notified 26/04/2023
Professor Erwin Reisner
born 12/1979 · England owns 25–50% of shares · holds 25–50% of votes Notified 21/01/2024
Subhajit Bhattacharjee
born 10/1995 · England owns 25–50% of shares · holds 25–50% of votes Control ended 21/01/2024

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
21/01/2024 Person with significant control ceased Subhajit Bhattacharjee
21/01/2024 Person with significant control added Professor Erwin Reisner
26/04/2023 Person with significant control added Subhajit Bhattacharjee
26/04/2023 Person with significant control added Chengzhi Guo

Financial highlights

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

Source: Companies House bulk data filed accounts (iXBRL)
Metric FY2025FY2024
Total assets less current liabilities -33 -37
Net assets -33 -37
Employees (avg) 2
▼ 33.3%
3

Documents for PROTONERA LTD

Need this one company on file? Buy the document on its own — no plan required.

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.

PDF Order
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.

PDF + CSV Order
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

No entry found on the ICO register of fee payers under this name.

Not every organisation has to register — some are exempt. An absent entry is a question to ask, not a finding.

Get this company via API

Every field on this page is available as structured JSON behind one endpoint and one API key.

GET /v1/company/gb/14830471
X-Api-Key: $OPENDATA_KEY
Read the API docs

Frequently asked questions

What is the company number of PROTONERA LTD?
According to the official registry, the company number of PROTONERA LTD is 14830471.
Where is PROTONERA LTD registered?
The registered office is SCALE SPACE, 58 WOOD LANE, LONDON, W12 7RZ, ENGLAND.
What is the SIC code of PROTONERA LTD?
The nature of business is recorded under SIC code 72190 — Other research and experimental development on natural sciences and engineering.
Who controls PROTONERA LTD?
Chengzhi Guo is recorded as a person with significant control, and owns 25–50% of shares, holds 25–50% of voting rights, can appoint and remove directors.
When are the next accounts of PROTONERA LTD due?
The next annual accounts are due by 31 January 2027, and the last accounts were made up to 30 April 2025.

About PROTONERA LTD (14830471)

PROTONERA LTD is a private limited company incorporated on 26 April 2023 and registered in the United Kingdom under company number 14830471. Its registered office is at SCALE SPACE, 58 WOOD LANE, LONDON, W12 7RZ, ENGLAND. The recorded nature of business is other research and experimental development on natural sciences and engineering (SIC 72190). The company is currently active , with statutory accounts last made up to 30 April 2025. , and the person with significant control is Chengzhi Guo. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House bulk data , last refreshed 2 September 2026.

Companies at the same registered office

Other research and experimental development on natural sciences and engineering across UK registers

The same sector and the same company, seen through every register we hold

Explore by sector

Every UK company records what it does as a SIC code — browse the sectors around this one.