CSL DEVELOPMENTS LIMITED
Company number 03451623 · Active · Aylesbury HP19 8UP
CSL DEVELOPMENTS LIMITED is an active private limited company (company number 03451623) incorporated on 17 October 1997, registered in Aylesbury. Its registered activity is manufacture of other special-purpose machinery n.e.c. (SIC 28990). Latest small accounts cover the period ending 31 October 2025, showing net assets of £33k and cash of £16k, with 1 employee on average. Net assets rose 76% on the prior period (£19k).
By net assets it sits in the lower half of 526 comparable companies in Other (median £40k, upper quartile £399k).
Key dates
- Incorporated
- 17 October 1997
- Next accounts due
- 31 July 2027 — in 286 days
- Confirmation statement due
- 31 October 2026 — in 13 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
Activity
- SIC 28990
- Manufacture of other special-purpose machinery n.e.c.
- Accounts type
- Total Exemption Full
- Size band
- Micro (Companies Act thresholds)
Financials — 2 periods on record, latest ending 31 October 2025
| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 October 2025 | £33k | £16k | £23k | £5,331 | — | — | 1 |
| 31 October 2024 | £19k | £26k | £45k | £64k | — | — | 2 |
- Current ratio
- 7.27 — comfortable
- Cash per employee
- £16k
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing.
Firmoscan score: 84/100 (grade A)
- +10 Positive net assets — Net assets £33,405 at 2025-10-31
- +8 Net assets growing — +75.9% vs prior period
- +8 Comfortable liquidity — Current ratio 7.27
- +8 Established — Incorporated 1997-10-17 (29 years)
A transparent, rules-based score from filed data only: every point lists its evidence. It is not a credit rating or advice.
Ownership and control
- Mr John Mark Clark — owns 75–100% of shares · since 6 April 2016
- Mrs Sarah Louise Clark — owns 25–50% of shares · since 2 June 2026
- Mrs Sarah Louise Clark — owns 25–50% of shares · since 14 March 2019 · ceased 1 June 2026
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents.
Similar companies in the UK
Same activity (manufacture of other special-purpose machinery n.e.c.), closest in incorporation date.
- MILL-TEK LIMITED — Salterton, inc. Oct 1997
- FROZEN IN TIME LIMITED — York, inc. Nov 1997
- ALLSOPP HELIKITES LIMITED — Fordingbridge, inc. Nov 1997
- LUXINAR LIMITED — Kingston Upon Hull, inc. Dec 1997
- COBALT SYSTEMS LTD — Wardle, inc. Jul 1997
- KEITH HANDY DESIGN LIMITED — Stone, inc. Jan 1998
Reminders for CSL DEVELOPMENTS LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.