£51.41m
−7%vs Dec 2024Active00642173Private limited companyKnottingley
PLASMOR LIMITED
Significant control: Plasmor (Holdings) Limited (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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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What does Plasmor Limited sell?
Registered activity: Manufacture of concrete products for construction purposes (SIC 23610). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
PLASMOR LIMITED is an active private limited company (company number 00642173) incorporated on 17 November 1959, registered in Knottingley. Its registered activity is manufacture of concrete products for construction purposes (SIC 23610). Latest full accounts cover the period ending 31 December 2025, showing net assets of £51.41m and cash of £13.59m, with 218 employees on average. Net assets fell 7% on the prior period (£55.19m). Across the last 3 periods on record the net-asset trend is falling.
Peer position · net assets
By net assets it sits in the top quarter of 406 comparable companies in the UK (median £580, upper quartile £98k).
02
Ownership and control
- Plasmor (Holdings) Limited
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
- Julian Antony Slater
- owns 50–75% of shares
- holds 50–75% of voting rights
- can appoint or remove directors
- has significant influence or control
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
- 17 November 195966 yrs ago
- Next accounts due
- 30 September 2027in 342 days
- Confirmation statement due
- 1 December 2026in 39 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 23610
- Manufacture of concrete products for construction purposes
- Accounts type
- Full
- Size band
- MediumCompanies Act thresholds
05
Financials
£13.59m
−25%vs Dec 2024Not reported
218
−5%vs Dec 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 December 2025 | £51.41m | £13.59m | £10.34m | £17.53m | — | £412k | 218 |
| 31 December 2024 | £55.19m | £18.05m | £11.61m | £16.95m | — | £1.75m | 230 |
| 31 August 2023 | £62.64m | £19.12m | £15.71m | £15.17m | — | £3.80m | 229 |
| 31 August 2022 | — | — | — | — | — | — | — |
Current ratio2.07Current assets ÷ creditors within one year
Cash per employee£62kCash ÷ 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 £51,405,976 at 31 December 2025
- Current assets at least 1.5× creditors within one yearCurrent ratio 2.07
- Cash at bank of £50,000 or moreCash £13,585,401
- Three or more accounting periods on record4 periods on record
- Incorporated five or more years agoIncorporated 17 November 1959
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 39 days
- Accounts period endNet assets £51.41m · full accounts
- Accounts period endNet assets £55.19m · full accounts
- Accounts period endNet assets £62.64m · full accounts
- Accounts period end
- Incorporated
08
Similar companies in Leeds
- MARSHALLS MONO LIMITEDElland · inc. Jul 1952
- STONEMARKET LIMITEDElland · inc. Feb 1970
- CPM GROUP LIMITEDElland · inc. Mar 1971
- PLASMOR (SABEY KIRBY) LIMITEDKnottingley · inc. Mar 1947
- DUNBRIK (YORKS) LIMITEDWakefield · inc. Sept 1946
- PLASMOR (HALTON) LIMITEDKnottingley · inc. Jul 1981
All companies incorporated on 17 November 1959 · in Nov 1959.
09
Reminders for PLASMOR LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.