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Private limited company registered in London, classed under “Security systems service activities”.
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
What the numbers say
1 finding from the figures, in plain English
Written by rules from the figures on this page. Not a forecast or a credit opinion.
History
| £ | 2021* | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Profit after tax | — | ||||
| Turnover | |||||
| Net assets | |||||
| Cash | |||||
| Employees |
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 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| Fixed assets | ||||
| 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 | ||||
6 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.
Questions people ask
›What does Sentinel Security Service do?
Private limited company registered in London, classed under “Security systems service activities”.
›How much turnover does Sentinel Security Service make?
Answered in the full report
›Is Sentinel Security Service profitable?
Sentinel Security Service's profit isn't public: small companies may file without a profit and loss account.
›How many people work at Sentinel Security Service?
Answered in the full report
›Where is Sentinel Security Service based?
Its registered office is 4 Grosvenor Crescent, London, NW9 9DA, in London.
›When was Sentinel Security Service founded?
Sentinel Security Service Ltd was incorporated on 3 September 2010.
›Is Sentinel Security Service still trading?
The register lists Sentinel Security Service Ltd as active.