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Other professional, scientific and technical activities n.e.c. · Cardiff
Sero Technologies
Sero Technologies Limited
Private limited company registered in Cardiff, classed under “Other professional, scientific and technical activities n.e.c.”.
Headline figures
FY to Dec 2025 · As filed (group accounts)
Turnover
For subscribers
Profit after tax
−£3.95m
Net assets
For subscribers
Cash
For subscribers
Employees
For subscribers
Retained reserves
For subscribers
What the numbers say
4 findings from the figures, in plain English
Written by rules from the figures on this page. Not a forecast or a credit opinion.
History
| £ | 2020 | 2021 | 2023* | 2024* | 2025 |
|---|---|---|---|---|---|
| Profit after tax | −£3.95m | ||||
| Turnover | |||||
| Net assets | |||||
| Cash | |||||
| Employees | |||||
| Retained reserves |
Every figure for all 5 years
“—” means we did not find the figure in a source; it is never filled with an estimate. * Restated: the next year's accounts printed different figures for this year, and those later figures are shown.
Balance sheet and ratios
From the filed balance sheets · £
| Balance sheet | 2021 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| Fixed assets | ||||
| Current assets | ||||
| of which debtors | ||||
| of which cash | ||||
| Creditors due within a year | ||||
| Net current assets | ||||
| Net assets | ||||
| Ratios | ||||
| Return on equityProfit after tax as a share of net assets | ||||
| Current ratioCurrent assets for every £1 owed within a year | ||||
| Cash ratioCash for every £1 owed within a year | ||||
| Creditors to assetsEverything owed to creditors as a share of fixed plus current assets | ||||
7 balance-sheet lines and 4 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.
Questions people ask
›What does Sero Technologies do?
Private limited company registered in Cardiff, classed under “Other professional, scientific and technical activities n.e.c.”.
›How much turnover does Sero Technologies make?
Answered in the full report
›Is Sero Technologies profitable?
No: it made a loss after tax of £3.95m in the year to 31 December 2025, its latest filed accounts.
›How many people work at Sero Technologies?
Answered in the full report
›Where is Sero Technologies based?
Its registered office is Westgate House, Womanby Street, Cardiff, CF10 1BR, in Cardiff.
›When was Sero Technologies founded?
Sero Technologies Limited was incorporated on 23 August 2017.
›Is Sero Technologies still trading?
The register lists Sero Technologies Limited as active.