£1.01m
+18%vs Mar 2024Active03470898Private limited companyHigh Wycombe
SYNERGY DEVICES LIMITED
Significant control: Derek Barry Williams-Wynn (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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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Registered activity: Other research and experimental development on natural sciences and engineering (SIC 72190). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
SYNERGY DEVICES LIMITED is an active private limited company (company number 03470898) incorporated on 25 November 1997, registered in High Wycombe. Its registered activity is other research and experimental development on natural sciences and engineering (SIC 72190). Latest abridged accounts cover the period ending 31 March 2025, showing net assets of £1.01m and cash of £1.19m, with 5 employees on average. As abridged accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets rose 18% on the prior period (£857k).
Peer position · net assets
By net assets it sits in the top quarter of 631 comparable companies in Other (median £700, upper quartile £44k).
02
Ownership and control
- Mr Derek Barry Williams-Wynn
- owns 75–100% of shares
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
- 25 November 199728 yrs ago
- Next accounts due
- 31 December 2026in 67 days
- Confirmation statement due
- 9 December 2026in 45 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 72190
- Other research and experimental development on natural sciences and engineering
- Accounts type
- Unaudited Abridged
- Size band
- MicroCompanies Act thresholds
05
Financials
£1.19m
+35%vs Mar 2024Not disclosed
5
−17%vs Mar 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2025 | £1.01m | £1.19m | £316k | — | — | — | 5 |
| 31 March 2024 | £857k | £879k | £217k | — | — | — | 6 |
Cash per employee£237kCash ÷ 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 £1,009,504 at 31 March 2025
- Net assets up 10% or more on the prior period+17.8% vs prior period
- Cash at bank of £50,000 or moreCash £1,186,790
- Incorporated five or more years agoIncorporated 25 November 1997
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 67 days
- Confirmation statement duein 45 days
- Accounts period endNet assets £1.01m · abridged accounts
- Accounts period endNet assets £857k · abridged accounts
- Incorporated
08
Similar companies in the UK
- SEICHE LIMITEDHolsworthy · inc. Dec 1997
- BRAZZOS LIMITEDDorchester · inc. Dec 1997
- ARGUN LIMITEDNewton Abbot · inc. Jan 1998
- SUI GENERIS LIMITEDEvesham · inc. Sept 1997
- CENTRE FOR RESEARCH INTO ENVIRONMENT AND HEALTH (CREH) LTDTaunton · inc. Feb 1998
- MODUS (SCOTLAND) LIMITEDAlloa · inc. Jul 1997
All companies incorporated on 25 November 1997 · in Nov 1997.
09
Reminders for SYNERGY DEVICES LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.