£195k
−19%vs Oct 2024Active01116673Private limited companySt. Ives
OPTICAL ACTIVITY LIMITED
Significant control: Jennifer Lynne Horn
From public filings as at 31 Aug 2026; may contain errors or be out of date.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 Optical Activity Limited sell?
Registered activity: Manufacture of electronic measuring, testing etc. equipment, not for industrial process control (SIC 26511). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
OPTICAL ACTIVITY LIMITED is an active private limited company (company number 01116673) incorporated on 5 June 1973, registered in St. Ives. Its registered activity is manufacture of electronic measuring, testing etc. equipment, not for industrial process control (SIC 26511). Latest micro accounts cover the period ending 31 October 2025, showing net assets of £195k, with 1 employee on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets fell 19% on the prior period (£241k).
Peer position · net assets
By net assets it sits in the upper half of 182 comparable companies in Other (median £73k, upper quartile £420k).
02
Ownership and control
- Dr Jennifer Lynne Horn
- 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
- 5 June 197353 yrs ago
- Next accounts due
- 31 July 2027in 281 days
- Confirmation statement due
- 19 June 2027in 239 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 26511
- Manufacture of electronic measuring, testing etc. equipment, not for industrial process control
- SIC 26701
- Manufacture of optical precision instruments
- Accounts type
- Micro Entity
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not disclosed
1
No changevs Oct 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 October 2025 | £195k | — | — | — | — | — | 1 |
| 31 October 2024 | £241k | — | — | — | — | — | 1 |
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 £194,594 at 31 October 2025
- Incorporated five or more years agoIncorporated 5 June 1973
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 281 days
- Confirmation statement duein 239 days
- Accounts period endNet assets £195k · micro accounts
- Accounts period endNet assets £241k · micro accounts
- Incorporated
08
Similar companies in the UK
- PULSAR INSTRUMENTS PLCFiley · inc. Feb 1973
- SIMTECH SIMULATION TECHNIQUES LIMITEDAylesbury · inc. Feb 1974
- GOSS SCIENTIFIC INSTRUMENTS LIMITEDCrewe · inc. Jul 1974
- INSTRUMENTATION & CONTROL SERVICES (HEREFORD) LIMITEDPeterchurch · inc. Apr 1972
- OXFORD INSTRUMENTS INDUSTRIAL PRODUCTS LIMITEDHigh Wycombe · inc. Feb 1972
- NIXON FLOWMETERS LIMITEDCheltenham · inc. Sept 1974
All companies incorporated on 5 June 1973 · in Jun 1973.
09
Reminders for OPTICAL ACTIVITY LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.