£1.77m
No changevs Dec 2024Active12353488Private limited companyCambridge
QUANTUM POWER TRANSFORMATION LIMITED
Significant control: Sweven Design Ltd (50–75%)
From public filings as at 31 Aug 2026; may contain errors or be out of date.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 Quantum Power Transformation Limited sell?
Registered activity: Other engineering activities (SIC 71129). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
QUANTUM POWER TRANSFORMATION LIMITED is an active private limited company (company number 12353488) incorporated on 9 December 2019, registered in Cambridge. Its registered activity is other engineering activities (SIC 71129). Latest small accounts cover the period ending 31 December 2025, showing net assets of £1.77m and cash of £125k, with 5 employees on average. Net assets were unchanged on the prior period.
Peer position · net assets
By net assets it sits in the top quarter of 112 comparable companies in Cambridge (median £6,390, upper quartile £56k).
02
Ownership and control
- Sweven Design Ltd
- owns 50–75% of shares
- holds 50–75% of voting rights
- can appoint or remove directors
- Mr Robert William Gwynne
- 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
- 9 December 20196 yrs ago
- Next accounts due
- 30 September 2027in 337 days
- Confirmation statement due
- 23 December 2026in 56 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 71129
- Other engineering activities
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
05
Financials
£125k
+20%vs Dec 2024Not reported
5
+25%vs Dec 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 December 2025 | £1.77m | £125k | — | £538k | — | — | 5 |
| 31 December 2024 | £1.77m | £104k | — | £528k | — | — | 4 |
Current ratio0.43Current assets ÷ creditors within one year
Cash per employee£25kCash ÷ 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 above zeroNet assets £1,770,227 at 31 December 2025
- Current assets below creditors within one yearCurrent ratio 0.43
- Cash at bank of £50,000 or moreCash £125,067
- Incorporated five or more years agoIncorporated 9 December 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 337 days
- Confirmation statement duein 56 days
- Accounts period endNet assets £1.77m · small accounts
- Accounts period endNet assets £1.77m · small accounts
- Incorporated
08
Similar companies in Cambridge
- THE CHORAL HUB LTDCambridge · inc. Jan 2020
- BRITVAC LTDCambridge · inc. Oct 2019
- ANTOMAD LTDCambridge · inc. Jan 2020
- ADVENTURE ENGINEERING LTDEly · inc. Feb 2020
- 100 PERCENT ENGINEERING LIMITEDHaverhill · inc. Sept 2019
- COOPER'S BUILDING SURVEYORS LTDSaffron Walden · inc. Apr 2020
All companies incorporated on 9 December 2019 · in Dec 2019.
09
Reminders for QUANTUM POWER TRANSFORMATION LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.