£129k
−13%vs Apr 2024Active05428495Private limited companyNorwich
SLOMKOWSKI I & R SYSTEMS LIMITED
Significant control: Sebastian Jan Slomkowski (25–50%)
From public filings as at 31 Aug 2026; may contain errors or be out of date.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: Construction of commercial buildings (SIC 41201). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
SLOMKOWSKI I & R SYSTEMS LIMITED is an active private limited company (company number 05428495) incorporated on 19 April 2005, registered in Norwich. Its registered activity is construction of commercial buildings (SIC 41201). Latest small accounts cover the period ending 30 April 2025, showing net assets of £129k and cash of £156k, with 1 employee on average. Net assets fell 13% on the prior period (£148k).
Peer position · net assets
By net assets it sits in the top quarter of 3,181 comparable companies in Other (median £11k, upper quartile £102k).
02
Ownership and control
- Mr Sebastian Jan Slomkowski
- owns 25–50% of shares
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
- 19 April 200521 yrs ago
- Next accounts due
- 30 January 2027in 95 days
- Confirmation statement due
- 3 May 2027in 188 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 41201
- Construction of commercial buildings
- SIC 41202
- Construction of domestic buildings
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
05
Financials
£156k
No changevs Apr 2024Not reported
1
No changevs Apr 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 April 2025 | £129k | £156k | £1,523 | £36k | — | — | 1 |
| 30 April 2024 | £148k | £156k | £1,620 | £26k | — | — | 1 |
Current ratio4.66Current assets ÷ creditors within one year
Cash per employee£156kCash ÷ 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 £128,725 at 30 April 2025
- Current assets at least 1.5× creditors within one yearCurrent ratio 4.66
- Cash at bank of £50,000 or moreCash £155,996
- Incorporated five or more years agoIncorporated 19 April 2005
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
- Confirmation statement duein 188 days
- Next accounts duein 95 days
- Accounts period endNet assets £129k · small accounts
- Accounts period endNet assets £148k · small accounts
- Incorporated
08
Similar companies in the UK
- MARK WHITELY PLANT HIRE LIMITEDDorchester · inc. Apr 2005
- TOTAL BUILD (EAST ANGLIA) LIMITEDLowestoft · inc. Apr 2005
- MAMCO CONSULTANTS LIMITEDHertfordshire · inc. May 2005
- CJH BUILDING CONTRACTORS LTDinc. May 2005
- J C TURNBULL BUILDING CONTRACTOR LTDYork · inc. Apr 2005
- KELVIN RICHARDS BUILDERS LIMITEDShropshire · inc. Mar 2005
All companies incorporated on 19 April 2005 · in Apr 2005.
09
Reminders for SLOMKOWSKI I & R SYSTEMS LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.