−£419k
−1934%vs Jun 2024Active15294596Private limited companyLondon
BUILT ENVIRONMENT OPTIMISATION UK LIMITED
Significant control: Copeland Limited (50–75%)
From public filings as at 31 Aug 2026; may contain errors or be out of date.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 information technology service activities (SIC 62090). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
BUILT ENVIRONMENT OPTIMISATION UK LIMITED is an active private limited company (company number 15294596) incorporated on 20 November 2023, registered in London. Its registered activity is other information technology service activities (SIC 62090). Latest small accounts cover the period ending 30 June 2025, showing net assets of −£419k and cash of £41k, with 2 employees on average. Net assets fell 1934% on the prior period (£23k).
Peer position · net assets
By net assets it sits in the bottom quarter of 8,890 comparable companies in London (median £1,000, upper quartile £36k).
02
Ownership and control
- Copeland Limited
- owns 50–75% of shares
- holds 50–75% of voting rights
- Leon William Starzynski Wurfel
- 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
- 20 November 20232 yrs ago
- Next accounts due
- 30 March 2027in 158 days
- Confirmation statement due
- 4 December 2026in 42 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 62090
- Other information technology service activities
- Accounts type
- Total Exemption Full
- Size band
- MicroCompanies Act thresholds
05
Financials
£41k
vs Jun 2024Not reported
2
+100%vs Jun 2024| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 30 June 2025 | −£419k | £41k | — | £476k | — | — | 2 |
| 30 June 2024 | £23k | £0 | — | £13k | — | — | 1 |
Current ratio0.12Current assets ÷ creditors within one year
Cash per employee£21kCash ÷ 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 below zeroNet assets £-419,349 at 30 June 2025
- Net assets down 25% or more on the prior period-1934.4% vs prior period
- Current assets below creditors within one yearCurrent ratio 0.12
- Incorporated two to five years agoIncorporated 20 November 2023
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 158 days
- Confirmation statement duein 42 days
- Accounts period endNet liabilities £419k · small accounts
- Accounts period endNet assets £23k · small accounts
- Incorporated
08
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All companies incorporated on 20 November 2023 · in Nov 2023.
09
Reminders for BUILT ENVIRONMENT OPTIMISATION UK LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.