Investigation and private security activities: highest published revenue
50 Belgian companies in the sector (NACE 8001) publish their revenue in recent accounts; here are the top 20. Securitas leads with €369.4m (financial year 2025).
Top 20
Ranked by revenue published in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Securitas 1831 Machelen (Brab.) | €215.8m | €369.4m | €45.3m | 4,594.8 | 2025 |
| 2 | G4S Secure Solutions 1000 Brussels | €109.6m | €187.6m | −€5.91m | 3,159.9 | 2025 |
| 3 | Protection Unit 4470 Saint-Georges-sur-Meuse | €64.6m | €145.8m | €1.07m | 2,196.9 | 2025 |
| 4 | Verisure 1130 Brussels | €82.7m | €142.7m | €50.5m | 200.6 | 2025 |
| 5 | G4S Aviation Security 1000 Brussels | €38.2m | €94.6m | €19.3m | 1,664.8 | 2025 |
| 6 | SERIS Security 1831 Machelen (Brab.) | €40.5m | €90.2m | €11.7m | 1,274.6 | 2025 |
| 7 | Brink's Solutions Belgium 1702 Dilbeek | €54.7m | €65.7m | €4.49m | — | 2025 |
| 8 | Seris Technology 3200 Aarschot | €12.5m | €35.1m | €3.70m | 148.1 | 2025 |
| 9 | Securitas Transport Aviation Security 1910 Kampenhout | €13.8m | €34.2m | €6.22m | 452.9 | 2025 |
| 10 | Maat Security 3560 Lummen | €7.33m | €24.7m | 416,012 € | 386.4 | 2025 |
| 11 | Tutela Novitas Defensio Security 9000 Ghent | €9.02m | €24.4m | 859,830 € | 404.3 | 2025 |
| 12 | High Security 1457 Walhain | €7.95m | €23.6m | 452,944 € | 353.0 | 2025 |
| 13 | Alertis 8800 Roeselare | €14.1m | €21.8m | €6.73m | 120.8 | 2025 |
| 14 | Loomis Belgium 1930 Zaventem | €22.6m | €20.5m | 850,790 € | 217.5 | 2025 |
| 15 | Securitas Alert Services 1831 Machelen (Brab.) | €42.7m | €17.0m | €32.1m | 55.2 | 2025 |
| 16 | Liège Airport-Security 4460 Grâce-Hollogne | €4.12m | €15.5m | 61,500 € | 16.3 | 2025 |
| 17 | Protection Unit Events 4470 Saint-Georges-sur-Meuse | €5.30m | €15.5m | 469,784 € | 99.7 | 2025 |
| 18 | Oktopus 1050 Brussels | €11.0m | €10.6m | €2.81m | 58.0 | 2025 |
| 19 | Torann 2000 Antwerp | €4.00m | €9.40m | 403,093 € | 165.1 | 2025 |
| 20 | Protection Unit Group 4031 Liège | €30.2m | €8.94m | €1.76m | 6.0 | 2025 |
These are the revenue figures published in the annual accounts. Small companies (micro and abridged accounts) do not have to publish theirs: they do not appear in this ranking.
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Frequently asked questions
Which company in Investigation and private security activities has the highest revenue?
Securitas, with €369.4m in revenue (financial year 2025).
How many Investigation and private security activities companies publish their revenue?
50 out of 351, in accounts less than 3 years old. Small companies (micro and abridged accounts) are not required to publish it.
Analyse companies in Investigation and private security activities
Filter these companies by size, soundness and trend, follow them and get an alert when their accounts or publications change.
Open the full file →Active companies (legal entities) that have filed at least one set of annual accounts, based on the Crossroads Bank for Enterprises and the National Bank of Belgium. The sector is the main activity in the register; the municipality is that of the registered office. Data updated on 14 Nov 2026.