TROMBONE LIMITED
Company number 14894841 · Active · London W5 5AW
Owned by Karol Grzezulkowski, Artur Piotr Karpezo and 1 other
TROMBONE LIMITED is an active private limited company (company number 14894841) incorporated on 25 May 2023, registered in London. Its registered activity is production of electricity (SIC 35110). Latest micro accounts cover the period ending 31 May 2025, showing net assets of −£39k, with 2 employees on average. As micro-entity accounts, no profit and loss account is filed, so turnover and profit are not public. Net assets fell 95% on the prior period (−£20k).
By net assets it sits in the lower half of 972 comparable companies in London (median £2, upper quartile £47k).
Key dates
- Incorporated
- 25 May 2023
- Next accounts due
- 28 February 2027 — in 129 days
- Confirmation statement due
- 8 June 2027 — in 229 days
Due dates are expected from Companies House filing rules; confirm on the official register before relying on them.
Activity
- SIC 35110
- Production of electricity
- SIC 70229
- Management consultancy activities other than financial management
- SIC 86210
- General medical practice activities
- Accounts type
- Micro Entity
- Size band
- Micro (Companies Act thresholds)
Financials — 2 periods on record, latest ending 31 May 2025
| Period end | Net assets | Cash | Debtors | Creditors <1y | Turnover | Profit | Employees |
|---|---|---|---|---|---|---|---|
| 31 May 2025 | −£39k | — | — | £38k | — | — | 2 |
| 31 May 2024 | −£20k | — | — | £20k | — | — | 2 |
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.
Firmoscan score: 31/100 (grade E)
- -15 Negative net assets — Net assets £-38,652 at 2025-05-31
- -8 Net assets falling — -94.6% vs prior period
- +4 Past first filings — Incorporated 2023-05-25
A transparent, rules-based score from filed data only: every point lists its evidence. It is not a credit rating or advice.
Ownership and control
- Mr Karol Grzezulkowski — owns 25–50% of shares; holds 25–50% of voting rights; can appoint or remove directors · since 25 May 2023
- Mr Artur Piotr Karpezo — owns 25–50% of shares; holds 25–50% of voting rights; can appoint or remove directors · since 25 May 2023
- Mrs Marzena ElżBieta Karpezo — owns 25–50% of shares; holds 25–50% of voting rights; can appoint or remove directors · since 25 May 2023
Persons with significant control hold 25% or more of shares or voting rights. Smaller shareholdings are only listed in confirmation-statement documents.
Similar companies in London
Same activity (production of electricity), closest in incorporation date.
- THURROCK STORAGE LIMITED — London, inc. May 2023
- SCOT ELEC 1 LIMITED — London, inc. May 2023
- LIGHTSOURCE VIKING LIMITED — London, inc. May 2023
- SOLACAP UK LTD — London, inc. May 2023
- THURROCK POWER 2 LIMITED — London, inc. May 2023
- GEMPOWEARTH LTD — London, inc. May 2023
All companies incorporated on 25 May 2023 · in May 2023.
Reminders for TROMBONE LIMITED
Get an email before each filing deadline — accounts and confirmation statement — so nothing is late.