£1.60m
+89%vs Mar 2024Active01458888Private limited companyEast Horsley
ADVENT DUCTWORK SYSTEMS LTD
Significant control: Peter John Smith (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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 engineering activities (SIC 71129). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
ADVENT DUCTWORK SYSTEMS LTD is an active private limited company (company number 01458888) incorporated on 2 November 1979, registered in East Horsley. Its registered activity is other engineering activities (SIC 71129). Latest small accounts cover the period ending 31 March 2025, showing net assets of £1.60m and cash of £656k, with 11 employees on average. Net assets rose 89% on the prior period (£845k).
Peer position · net assets
By net assets it sits in the top quarter of 1,321 comparable companies in Greater London (median £7,703, upper quartile £45k).
02
Ownership and control
- Mr Peter John Smith
- 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
- 2 November 197946 yrs ago
- Next accounts due
- 31 December 2026in 69 days
- Confirmation statement due
- 16 November 2026in 24 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 71129
- Other engineering activities
- Accounts type
- Total Exemption Full
- Size band
- SmallCompanies Act thresholds
05
Financials
£656k
+196%vs Mar 2024Not reported
11
+10%vs Mar 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2025 | £1.60m | £656k | £1.45m | — | — | — | 11 |
| 31 March 2024 | £845k | £221k | £970k | — | — | — | 10 |
Cash per employee£60kCash ÷ 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 £1,599,605 at 31 March 2025
- Net assets up 10% or more on the prior period+89.2% vs prior period
- Cash at bank of £50,000 or moreCash £655,654
- Incorporated five or more years agoIncorporated 2 November 1979
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 69 days
- Confirmation statement duein 24 days
- Accounts period endNet assets £1.60m · small accounts
- Accounts period endNet assets £845k · small accounts
- Incorporated
08
Similar companies in Greater London
- DAVENWAY LIMITEDEssex · inc. Feb 1980
- WEKO (U.K.) LIMITEDSutton · inc. Jul 1979
- MAGNETIC SEPARATIONS LIMITEDWallington · inc. Apr 1980
- SHELMAR ENGINEERING LIMITEDEnfield Middx · inc. May 1979
- ROANTWIN LIMITEDKent · inc. Feb 1979
- PNEUMATIC SERVICES (LONDON) LIMITEDPinner · inc. Aug 1980
All companies incorporated on 2 November 1979 · in Nov 1979.
09
Reminders for ADVENT DUCTWORK SYSTEMS LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.