£38k
+4%vs Mar 2025Active09845043Private limited companyLondon
UNDEFINED ARCHITECTURE LIMITED
Significant control: Francisco Javier Serradilla Mazuelas (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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: Architectural activities (SIC 71111). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
UNDEFINED ARCHITECTURE LIMITED is an active private limited company (company number 09845043) incorporated on 28 October 2015, registered in London. Its registered activity is architectural activities (SIC 71111). Latest micro accounts cover the period ending 31 March 2026, showing net assets of £38k, with 1 employee on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets rose 4% on the prior period (£36k).
Peer position · net assets
By net assets it sits in the upper half of 3,230 comparable companies in London (median £4,423, upper quartile £45k).
02
Ownership and control
- Mr. Francisco Javier Serradilla Mazuelas
- 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
- 28 October 201510 yrs ago
- Next accounts due
- 31 December 2027in 434 days
- Confirmation statement due
- 11 November 2026in 19 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 71111
- Architectural activities
- Accounts type
- Micro Entity
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not disclosed
1
Not reported the period before| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 March 2026 | £38k | — | — | £4,836 | — | — | 1 |
| 31 March 2025 | £36k | — | — | £2,742 | — | — | — |
Current ratio8.52Current assets ÷ creditors within one year
Figures as filed in iXBRL accounts at Companies House. "—" means the line was not reported in that filing; micro-entity accounts contain no profit and loss account.
06
Filing and accounts signals
- Net assets above zeroNet assets £37,677 at 31 March 2026
- Current assets at least 1.5× creditors within one yearCurrent ratio 8.52
- Incorporated five or more years agoIncorporated 28 October 2015
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 434 days
- Confirmation statement duein 19 days
- Accounts period endNet assets £38k · micro accounts
- Accounts period endNet assets £36k · micro accounts
- Incorporated
08
Similar companies in London
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- GERMAN PROPERTY SOLUTIONS LTDLondon · inc. Oct 2015
- BIURO PROJEKTOWE ASBUD LTDLondon · inc. Nov 2015
- APPLIED STUDIO ARCHITECTURE LTDLondon · inc. Nov 2015
All companies incorporated on 28 October 2015 · in Oct 2015.
09
Reminders for UNDEFINED ARCHITECTURE LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.