Not reported
Active16435629Private limited companyLondon
A3 CYBER ADVISORY LTD
Significant control: Serhii Sysoiev (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From public filings as at 31 Aug 2026; may contain errors or be out of date.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: Business and domestic software development (SIC 62012). We’re building product and service lists for UK companies. Get this one when it’s ready.
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01
Summary
A3 CYBER ADVISORY LTD is an active private limited company (company number 16435629) incorporated on 7 May 2025, registered in London. Its registered activity is business and domestic software development (SIC 62012). Latest micro accounts cover the period ending 31 December 2025, with 0 employees on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public.
There are 15,170 companies in business and domestic software development in London with filed accounts; the median reports net assets of £702 and is 5 years old.
02
Ownership and control
- Mr Serhii Sysoiev
- owns 50–75% of shares
- holds 50–75% of voting rights
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
- 7 May 20251 yr ago
- Next accounts due
- 30 September 2027in 340 days
- Confirmation statement due
- 21 May 2027in 208 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
04
Activity
- SIC 62012
- Business and domestic software development
- SIC 62020
- Information technology consultancy activities
- SIC 70229
- Management consultancy activities other than financial management
- Accounts type
- Micro Entity
- Size band
- MicroCompanies Act thresholds
05
Financials
Not reported
Not disclosed
0
1 period on record| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 December 2025 | — | — | — | £1,314 | — | — | 0 |
Current ratio4.17Current 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
- Current assets at least 1.5× creditors within one yearCurrent ratio 4.17
- Incorporated less than two years agoIncorporated 7 May 2025; no accounts due yet
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 340 days
- Confirmation statement duein 208 days
- Accounts period end
- Incorporated
08
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09
Reminders for A3 CYBER ADVISORY LTD
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.