£302k
+2%vs Dec 2024Active01577030Private limited companyCambridge
RHOMBUS SYSTEMS LIMITED
Significant control: Adam Timothy Cearns (25–50%), David Richard Howlett Hartley (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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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Registered activity: Manufacture of computers and peripheral equipment (SIC 26200). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
RHOMBUS SYSTEMS LIMITED is an active private limited company (company number 01577030) incorporated on 28 July 1981, registered in Cambridge. Its registered activity is manufacture of computers and peripheral equipment (SIC 26200). Latest micro accounts cover the period ending 31 December 2025, showing net assets of £302k, with 5 employees on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets rose 2% on the prior period (£297k).
Peer position · net assets
By net assets it sits in the top quarter of 672 comparable companies in the UK (median £2,365, upper quartile £116k).
02
Ownership and control
- Mr Adam Timothy Cearns
- owns 25–50% of shares
- Mr David Richard Howlett Hartley
- owns 50–75% 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
- 28 July 198145 yrs ago
- Next accounts due
- 30 September 2027in 342 days
- Confirmation statement due
- 11 August 2027in 292 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 26200
- Manufacture of computers and peripheral equipment
- SIC 26511
- Manufacture of electronic measuring, testing etc. equipment, not for industrial process control
- SIC 62012
- Business and domestic software development
- Accounts type
- Micro Entity
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not disclosed
5
+25%vs Dec 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 December 2025 | £302k | — | — | £50k | — | — | 5 |
| 31 December 2024 | £297k | — | — | £68k | — | — | 4 |
Current ratio6.77Current 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 £301,582 at 31 December 2025
- Current assets at least 1.5× creditors within one yearCurrent ratio 6.77
- Incorporated five or more years agoIncorporated 28 July 1981
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 342 days
- Confirmation statement duein 292 days
- Accounts period endNet assets £302k · micro accounts
- Accounts period endNet assets £297k · micro accounts
- Incorporated
08
Similar companies in Cambridge
- PRISM SOUND LIMITEDEly · inc. Oct 1987
- ADVANCED MICRO PERIPHERALS LIMITEDCommon Road, Witchford · inc. Dec 1993
- WORLD OF COMPUTERS LIMITEDCambridge · inc. Jan 1994
- LAKE IMAGE SYSTEMS LIMITEDCambridge · inc. Aug 1994
- KEW INVESTMENTS LTDCambridge · inc. Nov 1997
- PRECEDENCE TECHNOLOGIES LTDCambridge · inc. Mar 1999
All companies incorporated on 28 July 1981 · in Jul 1981.
09
Reminders for RHOMBUS SYSTEMS LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.