Investigation and security activities: the largest employers in Wallonia
As of 12 Nov 2026, 39 companies in Investigation and security activities (NACE 80) in Wallonia report employees in recent accounts (financial years 2023 to 2025). The 10 largest employers account for 3,056.3 FTE, out of 3,280 for all of them; median headcount is 10.7 FTE. Protection Unit leads with 2,196.9 FTE (financial year 2025).
Top 39 · Investigation and security activities · Wallonia
Ranked by average headcount (FTE) reported in the latest filed accounts (accounts less than 3 years old).
| # | Company | Total assets | Revenue | Equity | FTE | Year |
|---|---|---|---|---|---|---|
| 1 | Protection Unit 4470 Saint-Georges-sur-Meuse | €64.6m | €145.8m | €1.07m | 2,196.9 | 2025 |
| 2 | High Security 1457 Walhain | €7.95m | €23.6m | 452,944 € | 353.0 | 2025 |
| 3 | Optimalis Security 1301 Wavre | €2.50m | — | 636,550 € | 165.0 | 2025 |
| 4 | Protection Unit Events 4470 Saint-Georges-sur-Meuse | €5.30m | €15.5m | 469,784 € | 99.7 | 2025 |
| 5 | ESG Security 1380 Lasne | €1.91m | — | 92,461 € | 58.4 | 2025 |
| 6 | Vigicore 6700 Arlon | €1.38m | — | 529,264 € | 47.6 | 2025 |
| 7 | Nexova Cyber 6890 Libin | €33.2m | — | −€3.47m | 43.8 | 2025 |
| 8 | SC Security Group 6280 Gerpinnes | 659,398 € | — | 17,190 € | 32.3 | 2025 |
| 9 | Maximum Security 4020 Liège | 739,410 € | — | −197,979 € | 32.3 | 2025 |
| 10 | Centre Régional de Sécurité 6041 Charleroi | €4.30m | — | €1.53m | 27.3 | 2024 |
| 11 | Atlantis Security Prevention 7621 Brunehaut | 586,646 € | — | 113,876 € | 24.3 | 2025 |
| 12 | SD Security 1410 Waterloo | €2.07m | — | 862,203 € | 22.0 | 2025 |
| 13 | Protection Unit Airport 4470 Saint-Georges-sur-Meuse | 897,102 € | €1.12m | 486,697 € | 19.0 | 2025 |
| 14 | Active Security 7730 Estaimpuis | €2.17m | — | €1.07m | 18.2 | 2025 |
| 15 | Liège Airport-Security 4460 Grâce-Hollogne | €4.12m | €15.5m | 61,500 € | 16.3 | 2025 |
| 16 | C. Pro 1480 Tubize | €2.74m | — | €1.41m | 16.1 | 2025 |
| 17 | Axess Guarding 6043 Charleroi | €1.11m | — | 120,266 € | 12.9 | 2025 |
| 18 | Acta Security 7522 Tournai | 443,428 € | — | 206,395 € | 12.9 | 2025 |
| 19 | IG Consulting 6224 Fleurus | 445,063 € | — | −214,433 € | 11.8 | 2023 |
| 20 | Brussels South Charleroi Airport-Security 6041 Charleroi | €4.75m | — | 130,352 € | 10.7 | 2025 |
| 21 | Protection Unit Group 4031 Liège | €30.2m | €8.94m | €1.76m | 6.0 | 2025 |
| 22 | J2M 4684 Oupeye | 447,044 € | — | 263,916 € | 5.4 | 2025 |
| 23 | Axess Guarding Solutions 6043 Charleroi | 155,769 € | — | 2,674 € | 4.6 | 2025 |
| 24 | BE CAT Security 4000 Liège | 979,710 € | — | 475,239 € | 4.2 | 2025 |
| 25 | Bevier Security 1410 Waterloo | €2.88m | — | 950,792 € | 4.1 | 2025 |
| 26 | Trans Executive 7804 Ath | €1.78m | — | €1.02m | 4.0 | 2025 |
| 27 | Alliance Security 4020 Liège | €1.20m | 577,827 € | 195,950 € | 3.9 | 2025 |
| 28 | Wewatch Security 7000 Mons | 158,915 € | — | 90,970 € | 3.7 | 2025 |
| 29 | Security Team Services 4100 Seraing | 236,798 € | — | 34,971 € | 3.5 | 2025 |
| 30 | Secore 6700 Arlon | 155,574 € | — | 52,120 € | 3.4 | 2025 |
| 31 | MB Protect 4367 Crisnée | 255,953 € | — | 103,305 € | 3.4 | 2025 |
| 32 | Sprinklage & Co 5170 Profondeville | 652,753 € | — | 333,281 € | 3.2 | 2025 |
| 33 | Stoll Security Belgium 1402 Nivelles | €9.73m | — | €3.65m | 2.9 | 2025 |
| 34 | B4 Services Safety and Logistics 1410 Waterloo | 352,304 € | — | 157,008 € | 2.3 | 2025 |
| 35 | Success Security 7110 La Louvière | 688,449 € | — | 223,549 € | 1.4 | 2025 |
| 36 | IQ Security 1410 Waterloo | 66,080 € | — | −215,809 € | 1.1 | 2024 |
| 37 | Sorhea 7500 Tournai | 394,513 € | — | −€1.02m | 1.0 | 2024 |
| 38 | ACEB 4970 Stavelot | 971,600 € | — | 20,460 € | 0.9 | 2025 |
| 39 | Solution V 4300 Waremme | 34,684 € | — | 11,878 € | 0.5 | 2023 |
Ranking based on each company's own annual accounts (statutory, not consolidated): a subsidiary and its parent appear separately, and the ranking differs from lists based on consolidated group accounts. Headcount reported by the company for all its sites: the jobs may be located elsewhere.
“—”: not published. Small companies (micro and abridged accounts) do not have to publish their revenue.
Investigation and security activities across Belgium → All sectors · Wallonia →
Other sectors · Wallonia
- 01 Crop and animal production, hunting and related service activities780
- 02 Forestry and logging194
- 08 Other mining and quarrying77
- 10 Manufacture of food products964
- 11 Manufacture of beverages98
- 13 Manufacture of textiles81
- 14 Manufacture of wearing apparel32
- 16 Manufacture of wood and of products of wood and cork, except furniture; manufacture of articles of straw and plaiting materials221
- 17 Manufacture of paper and paper products44
- 18 Printing and reproduction of recorded media183
- 20 Manufacture of chemicals and chemical products154
- 21 Manufacture of basic pharmaceutical products and pharmaceutical preparations70
- 22 Manufacture of rubber and plastic products140
- 23 Manufacture of other non-metallic mineral products267
- 24 Manufacture of basic metals97
- 25 Manufacture of fabricated metal products, except machinery and equipment863
- 26 Manufacture of computer, electronic and optical products110
- 27 Manufacture of electrical equipment94
- 28 Manufacture of machinery and equipment n.e.c.245
- 29 Manufacture of motor vehicles, trailers and semi-trailers62
- 30 Manufacture of other transport equipment32
- 31 Manufacture of furniture148
- 32 Other manufacturing184
- 33 Repair, maintenance and installation of machinery and equipment290
- 35 Electricity, gas, steam and air conditioning supply55
- 37 Sewerage34
- 38 Waste collection, recovery and disposal activities185
- 39 Remediation activities and other waste management service activities12
- 41 Construction of residential and non-residential buildings1,633
- 42 Civil engineering230
- 43 Specialised construction activities4,770
- 46 Wholesale trade3,107
- 47 Retail trade6,425
- 49 Land transport and transport via pipelines955
- 50 Water transport13
- 52 Warehousing, storage and support activities for transportation248
- 53 Postal and courier activities44
- 55 Accommodation497
- 56 Food and beverage service activities3,657
- 58 Publishing activities116
- 59 Motion picture, video and television programme production, sound recording and music publishing activities116
- 60 Programming, broadcasting, news agency and other content distribution activities19
- 61 Telecommunication45
- 62 Computer programming, consultancy and related activities855
- 63 Computing infrastructure, data processing, hosting and other information service activities56
- 64 Financial service activities, except insurance and pension funding460
- 65 Insurance, reinsurance and pension funding, except compulsory social security30
- 66 Activities auxiliary to financial services and insurance activities977
- 68 Real estate activities1,204
- 69 Legal and accounting activities1,756
- 70 Activities of head offices and management consultancy1,073
- 71 Architectural and engineering activities; technical testing and analysis709
- 72 Scientific research and development141
- 73 Activities of advertising, market research and public relations285
- 74 Other professional, scientific and technical activities118
- 75 Veterinary activities173
- 77 Rental and leasing activities148
- 78 Employment activities145
- 79 Travel agency, tour operator and other reservation service and related activities124
- 81 Services to buildings and landscape activities738
- 82 Office administrative, office support and other business support activities285
- 84 Public administration and defence; compulsory social security25
- 85 Education560
- 86 Human health activities1,816
- 87 Residential care activities621
- 88 Social work activities without accommodation415
- 90 Arts creation and performing arts activities144
- 91 Libraries, archives, museums and other cultural activities62
- 92 Gambling and betting activities27
- 93 Sports activities and amusement and recreation activities459
- 94 Activities of membership organisations223
- 95 Repair and maintenance of computers, personal and household goods, and motor vehicles and motorcycles523
- 96 Personal service activities823
Municipalities with the most companies in the sector · Wallonia
- 4000 Liège (Glain, Rocourt)8
- 1410 Waterloo7
- 1480 Tubize (Clabecq, Oisquercq, Saintes)6
- 4470 Saint-Georges-sur-Meuse5
- 4020 Liège (Bressoux, Jupille-Sur-Meuse, Wandre)4
- 7110 La Louvière (Boussoit, Houdeng-Aimeries, Houdeng-Goegnies, …)4
- 1348 Ottignies-Louvain-la-Neuve (Louvain-La-Neuve)3
- 1390 Grez-Doiceau (Archennes, Biez, Bossut-Gottechain, …)3
- 6000 Charleroi3
- 6040 Charleroi (Jumet)3
- 1301 Wavre (Bierges)2
- 1370 Jodoigne (Dongelberg, Jauchelette, Jodoigne-Souveraine, …)2
Frequently asked questions
Which is the largest employer in Investigation and security activities in Wallonia?
Among companies, Protection Unit, with 2,196.9 full-time equivalents reported (financial year 2025).
Are all the jobs located in the area?
Not necessarily: headcount is reported by the company for all its sites, and the company is ranked by the address of its registered office. 39 out of 145 companies in the sector report employees there.
Why does this ranking differ from other lists?
It uses each company's annual accounts as filed with the National Bank, not consolidated group accounts. A holding, a subsidiary or a purchasing entity can therefore appear separately. Only companies whose latest accounts are less than 3 years old are ranked.
Analyse companies · Wallonia
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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 12 Nov 2026.