−£1.95m
vs Dec 2024Active12163852Private limited companyPorton Down
SENTINEL PHOTONICS LIMITED
Significant control: Christopher David Burgess (25–50%), Sean Michael Tsi-Ong Tipper (25–50%)
From public filings as at 31 Aug 2026; may contain errors or be out of date. Verify at Companies House · Terms
Watch this company
Get an email when Companies House records a change for Sentinel Photonics Limited: status, filings, accounts, officers or owners. Free.
Not live yet: alerts start by 15 December 2026. We store your email and this company number only, for these alerts. If alerts don’t launch, we tell you and delete your address. Privacy
Coming soon · product and service lists
What does Sentinel Photonics Limited sell?
Registered activity: Other manufacturing n.e.c. (SIC 32990). We’re building product and service lists for UK companies. Get this one when it’s ready.
One email, only about this. If we don’t launch within 60 days we’ll tell you. Privacy
01
Summary
SENTINEL PHOTONICS LIMITED is an active private limited company (company number 12163852) incorporated on 19 August 2019, registered in Porton Down. Its registered activity is other manufacturing n.e.c. (SIC 32990). Latest small accounts cover the period ending 31 December 2025, showing net assets of −£1.95m and cash of £261k, with 15 employees on average. Net assets fell 72% on the prior period (−£1.13m).
Peer position · net assets
By net assets it sits in the bottom quarter of 2,638 comparable companies in Other (median £8,019, upper quartile £163k).
02
Ownership and control
- Dr Christopher David Burgess
- holds 25–50% of voting rights
- Sean Michael Tsi-Ong Tipper
- holds 25–50% of voting rights
- Ploughshare Innovations Ltd
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
- Ploughshare Innovations Ltd
- owns 25–50% of shares
- holds 25–50% of voting rights
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
- 19 August 20197 yrs ago
- Next accounts due
- 30 September 2027in 338 days
- Confirmation statement due
- 2 September 2027in 310 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 32990
- Other manufacturing n.e.c.
- SIC 72190
- Other research and experimental development on natural sciences and engineering
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
05
Financials
£261k
−53%vs Dec 2024Not reported
15
−12%vs Dec 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 December 2025 | −£1.95m | £261k | £410k | £2.68m | — | — | 15 |
| 31 December 2024 | −£1.13m | £557k | £208k | £1.90m | — | — | 17 |
Current ratio0.36Current assets ÷ creditors within one year
Cash per employee£17kCash ÷ average employees
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.
06
Filing and accounts signals
- Net assets below zeroNet assets £-1,947,499 at 31 December 2025
- Net assets down 25% or more on the prior period-71.8% vs prior period
- Current assets below creditors within one yearCurrent ratio 0.36
- Cash at bank of £50,000 or moreCash £260,975
- Incorporated five or more years agoIncorporated 19 August 2019
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
- Next accounts duein 338 days
- Confirmation statement duein 310 days
- Accounts period endNet liabilities £1.95m · small accounts
- Accounts period endNet liabilities £1.13m · small accounts
- Incorporated
08
Similar companies in the UK
- THE CANDLE BRAND LTDNorwich · inc. Aug 2019
- INTERNATIONAL EXHIBITIONS GROUP LIMITEDSt. Ives · inc. Aug 2019
- TURNAROUND (YORKSHIRE) LTDYork · inc. Aug 2019
- HOOPOE GROUP LTDIpswich · inc. Sept 2019
- EARTH REBEL LTDBarnstaple · inc. Sept 2019
- PROSPECTED LTDSkegness · inc. Sept 2019
All companies incorporated on 19 August 2019 · in Aug 2019.
09
Reminders for SENTINEL PHOTONICS LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.