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About OCS
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Aviation
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Government
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Manufacturing
Retail
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Pandemic response services
Facilities management
Security
Cleaning
Technical services
Catering
Aviation services
Front-of-house and support services
Waste management and recycling
Electrical testing and compliance
Horticulture
Industrial and environmental
Washrooms and hygiene
Pest control
Responsibility
Supporting our communities
Sustainability
Health and safety
News
Careers
Knowledge Centre
Contact us