£170
−100%vs Sept 2024Active05963201Private limited companyCambridge
ISOMASS LTD
Significant control: Iain Alexander Mair (25–50%), Alexander Michael Bignell (25–50%)
From public filings as at 31 Aug 2026; may contain errors or be out of date.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 Isomass Ltd sell?
Registered activity: Other specialised construction activities n.e.c. (SIC 43999). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
ISOMASS LTD is an active private limited company (company number 05963201) incorporated on 11 October 2006, registered in Cambridge. Its registered activity is other specialised construction activities n.e.c. (SIC 43999). Latest small accounts cover the period ending 30 September 2025, showing net assets of £170 and cash of £9,158, with 6 employees on average. Net assets fell 100% on the prior period (£56k).
Peer position · net assets
By net assets it sits in the lower half of 160 comparable companies in Cambridge (median £10k, upper quartile £81k).
02
Ownership and control
- Mr Iain Alexander Mair
- owns 25–50% of shares
- holds 25–50% of voting rights
- can appoint or remove directors
- Mr Alexander Michael Bignell
- owns 25–50% of shares
- holds 25–50% of voting rights
- can appoint or remove directors
- Mr David Anthony Bignell
- owns 25–50% 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
- 11 October 200620 yrs ago
- Next accounts due
- 30 June 2027in 249 days
- Confirmation statement due
- 25 October 2027in 366 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 43999
- Other specialised construction activities n.e.c.
- SIC 71122
- Engineering related scientific and technical consulting activities
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
05
Financials
£9,158
−83%vs Sept 2024Not reported
6
No changevs Sept 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 September 2025 | £170 | £9,158 | £168k | — | — | — | 6 |
| 30 September 2024 | £56k | £54k | £176k | — | — | — | 6 |
Cash per employee£1,526Cash ÷ 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 £170 at 30 September 2025
- Net assets down 25% or more on the prior period-99.7% vs prior period
- Incorporated five or more years agoIncorporated 11 October 2006
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 366 days
- Next accounts duein 249 days
- Accounts period endNet assets £170 · small accounts
- Accounts period endNet assets £56k · small accounts
- Incorporated
08
Similar companies in Cambridge
- APOLLO DAMP & TIMBER DECAY SPECIALISTS LTDGreat Chesterford · inc. Oct 2006
- EDWARD HALFORD LIMITEDCambridgeshire · inc. Jul 2006
- ENVIRON TECHNOLOGIES LIMITEDCambourne · inc. Jan 2007
- M RUSSELL DESIGN AND BUILD LIMITEDEly · inc. May 2006
- WELLSOLVED LIMITEDinc. May 2006
- DIGITAL DECOR UK LIMITEDCambridge · inc. Mar 2007
All companies incorporated on 11 October 2006 · in Oct 2006.
09
Reminders for ISOMASS LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.