Substronaut

Substronaut Ltd

ActiveLatest figures: 2025Abridged accountsCompany only3 years on the register

Private limited company registered in London, classed under “Business and domestic software development”.

Headline figures

FY to Sept 2025 · Company only

Turnover

For subscribers

Profit after tax

—

Not filed: small-company exemption

Net assets

For subscribers

Cash

For subscribers

Employees

For subscribers

2 findings from the figures, in plain English

Written by rules from the figures on this page. Not a forecast or a credit opinion.

Pro

Every figure for all 2 years

“—” means we did not find the figure in a source; it is never filled with an estimate.

From the filed balance sheets · £

Balance sheet	2024	2025
Current assets
Creditors due within a year
Net current assets
Creditors due after a year
Net assets
Ratios
Current ratioCurrent assets for every £1 owed within a year
Creditors to assetsEverything owed to creditors as a share of fixed plus current assets

5 balance-sheet lines and 2 ratios, every year

A ratio appears only for years where every line it needs was filed. Lines are as tagged in the accounts; nothing is added up or estimated.

›What does Substronaut do?

Private limited company registered in London, classed under “Business and domestic software development”.

›How much turnover does Substronaut make?

Answered in the full report

›Is Substronaut profitable?

Substronaut's profit isn't public: small companies may file without a profit and loss account.

›How many people work at Substronaut?

Answered in the full report

›Where is Substronaut based?

Its registered office is 71-75 Shelton Street, Covent Garden, London, WC2H 9JQ, in London.

›When was Substronaut founded?

Substronaut Ltd was incorporated on 10 September 2023.

›Is Substronaut still trading?

The register lists Substronaut Ltd as active.