£337
+33600%vs Sept 2024Active15168876Private limited companyLondon
PROTON DIAGNOSTICS LTD
Significant control: Lia Elizabeth Moreira (75–100%)
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
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What does Proton Diagnostics Ltd sell?
Registered activity: Specialists medical practice activities (SIC 86220). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
PROTON DIAGNOSTICS LTD is an active private limited company (company number 15168876) incorporated on 27 September 2023, registered in London. Its registered activity is specialists medical practice activities (SIC 86220). Latest micro accounts cover the period ending 30 September 2025, showing net assets of £337, with 1 employee on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets rose 33600% on the prior period (£1).
Peer position · net assets
By net assets it sits in the lower half of 2,817 comparable companies in London (median £16k, upper quartile £103k).
02
Ownership and control
- Miss Lia Elizabeth Moreira
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents. Directors and secretaries: see the officers list at Companies House.
03
Key dates
- Incorporated
- 27 September 20233 yrs ago
- Next accounts due
- 30 June 2027in 250 days
- Confirmation statement due
- 11 October 2027in 353 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 86220
- Specialists medical practice activities
- Accounts type
- Micro Entity
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not disclosed
1
vs Sept 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 September 2025 | £337 | — | — | £913 | — | — | 1 |
| 30 September 2024 | £1 | — | — | £0 | — | — | 0 |
Current ratio1.37Current assets ÷ creditors within one year
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing; micro-entity accounts contain no profit and loss account.
06
Filing and accounts signals
- Net assets above zeroNet assets £337 at 30 September 2025
- Net assets up 10% or more on the prior period+33600.0% vs prior period
- Incorporated two to five years agoIncorporated 27 September 2023
Neutral facts read from the register and filed accounts, each with its evidence. They are not a rating, a prediction or advice, and may be incomplete or out of date. How each signal is derived.
07
Timeline
- Confirmation statement duein 353 days
- Next accounts duein 250 days
- Accounts period endNet assets £337 · micro accounts
- Accounts period endNet assets £1 · micro accounts
- Incorporated
08
Similar companies in London
- R BALAKUMAR LTDLondon · inc. Sept 2023
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- WINSPIR AESTHETICS LTDLondon · inc. Sept 2023
- 24HR THERAPY LTDLondon · inc. Oct 2023
- BADRANMD LIMITEDLondon · inc. Sept 2023
- CARE FOR MY CHILD LTDLondon · inc. Sept 2023
All companies incorporated on 27 September 2023 · in Sept 2023.
09
Reminders for PROTON DIAGNOSTICS LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.