£66k
+39%vs Nov 2024Active07072191Private limited companyCambridge
SOUND MATHEMATICS LTD
Significant control: Professor Larissa Fradkin (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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
SOUND MATHEMATICS LTD is an active private limited company (company number 07072191) incorporated on 11 November 2009, registered in Cambridge. Its registered activity is other research and experimental development on natural sciences and engineering (SIC 72190). Latest micro accounts cover the period ending 30 November 2025, showing net assets of £66k, with 2 employees on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets rose 39% on the prior period (£48k).
Peer position · net assets
By net assets it sits in the upper half of 193 comparable companies in Cambridge (median £6,914, upper quartile £134k).
02
Ownership and control
- Professor Larissa Fradkin
- 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
- 11 November 200916 yrs ago
- Next accounts due
- 30 August 2027in 311 days
- Confirmation statement due
- 25 November 2026in 33 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
- SIC 85590
- Other education n.e.c.
- Accounts type
- Micro Entity
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not disclosed
2
No changevs Nov 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 November 2025 | £66k | — | — | — | — | — | 2 |
| 30 November 2024 | £48k | — | — | — | — | — | 2 |
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 £66,423 at 30 November 2025
- Net assets up 10% or more on the prior period+39.4% vs prior period
- Incorporated five or more years agoIncorporated 11 November 2009
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 311 days
- Confirmation statement duein 33 days
- Accounts period endNet assets £66k · micro accounts
- Accounts period endNet assets £48k · micro accounts
- Incorporated
08
Similar companies in Cambridge
- CAMCON MEDICAL LIMITEDCambridge · inc. Nov 2009
- CAMCON INDUSTRIAL LIMITEDCambridge · inc. Nov 2009
- INVENTION WORKS LIMITEDCambridge · inc. Sept 2009
- TRANSDIME TECHNOLOGIES LTDSaffron Walden · inc. Mar 2010
- ACCLAROGEN LIMITEDCambridge · inc. May 2009
- ATOMJET LIMITEDCambridge · inc. Apr 2010
All companies incorporated on 11 November 2009 · in Nov 2009.
09
Reminders for SOUND MATHEMATICS LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.