£225k
−12%vs Mar 2024Active04902311Private limited company
CRYSTAL SIGMA LTD
Significant control: Riaz & Sons Holding Ltd (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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 Crystal Sigma Ltd sell?
Registered activity: Plumbing, heat and air-conditioning installation (SIC 43220). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
CRYSTAL SIGMA LTD is an active private limited company (company number 04902311) incorporated on 17 September 2003. Its registered activity is plumbing, heat and air-conditioning installation (SIC 43220). Latest small accounts cover the period ending 31 March 2025, showing net assets of £225k and cash of £327k, with 16 employees on average. Net assets fell 12% on the prior period (£257k).
Peer position · net assets
By net assets it sits in the top quarter of 2,146 comparable companies in London (median £2,932, upper quartile £20k).
02
Ownership and control
- Riaz & Sons Holding Ltd
- owns 75–100% of shares
- holds 75–100% of voting rights
- can appoint or remove directors
- Mr Mohammad Samir Riaz
- 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
- 17 September 200323 yrs ago
- Next accounts due
- 31 December 2026in 68 days
- Confirmation statement due
- 1 October 2027in 342 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 43220
- Plumbing, heat and air-conditioning installation
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
05
Financials
£327k
+213%vs Mar 2024Not reported
16
No changevs Mar 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2025 | £225k | £327k | — | — | — | — | 16 |
| 31 March 2024 | £257k | £104k | — | — | — | — | 16 |
Cash per employee£20kCash ÷ 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 £224,713 at 31 March 2025
- Cash at bank of £50,000 or moreCash £327,340
- Incorporated five or more years agoIncorporated 17 September 2003
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 342 days
- Next accounts duein 68 days
- Accounts period endNet assets £225k · small accounts
- Accounts period endNet assets £257k · small accounts
- Incorporated
08
Similar companies in London
- GB CONTRACTING LIMITEDLondon · inc. Sept 2003
- ACADEMY BUILDING CONTRACTORS LIMITEDLondon · inc. Oct 2003
- ROBERT'S QUALITY PLUMBING AND HEATING SERVICES LIMITEDLondon · inc. Aug 2003
- WISELEAD SERVICES LIMITEDLondon · inc. Aug 2003
- ADEPTLY LIMITEDLondon · inc. Jul 2003
- CMK PLUMBING & HEATING LIMITEDinc. Nov 2003
All companies incorporated on 17 September 2003 · in Sept 2003.
09
Reminders for CRYSTAL SIGMA LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.