The RoSPA awards scheme, established 58 years ago, rewards commitment to continuous safety improvements and work preventing accident and ill health.
RoSPA award manager David Rawlins said that organisations who achieved the awards contributed to "a collective raising of the bar for other organisations to aspire to".
Ground Control client services director Philip Trehern said the RoSPA awards were sought after by companies.
He added: "A big thank you to all those who wear their PPE, maintain their machines, follow safe systems of work and actively contribute to our safety culture. Keep putting safety and wellbeing at the top of our daily agendas."
Grounds maintenance, design and landscaping company Ground Control was established in 1973 and is based in Billericay, Essex.