Greg O’Brien
Managing Director
Brings 25 years’ experience in manufacturing and 15 years in facilities management, leading with clarity and commitment to deliver innovative, customer‑focused services across all operations.
People with purpose.
Our strength lies in our people. With nearly 600 dedicated colleagues across the UK, we bring together a passionate, professional, and highly skilled team committed to delivering exceptional services.
From cleaning and security to specialist services and washroom care, our team works tirelessly behind the scenes to ensure your workplace runs smoothly, safely, and efficiently.
At the heart of Pinnacle Workplace are leaders who shape our culture and drive our success:
Brings 25 years’ experience in manufacturing and 15 years in facilities management, leading with clarity and commitment to deliver innovative, customer‑focused services across all operations.
Brings 20 years’ experience in hospitality and leads with precision and passion, ensuring our teams deliver consistent, high-quality service across all sectors.
Brings over 30 years’ experience in the hospitality sector, including 15 years across concessions, B&I, and Soft Services, leading high‑performing teams and strengthening client partnerships to elevate service delivery.
Brings over 20 years’ experience in the FM industry, with a strong background in catering, and excels in people, project, and change management to drive consistent, high-quality outcomes.
Brings 8 years’ experience in facilities management and leads with a strong focus on client relationships, service quality, and sustainable growth across all areas of delivery.
Brings 15 years of experience, providing strategic financial analysis, planning, and insight to the team.
Brings 20 years’ experience in the security sector, with a strong background in major incident and crisis management, and a decade of leading teams across security and facilities services.
Brings 21 years’ hands‑on experience in heavy industrial cleaning and leads with a strong focus on safety, efficiency, and high sanitation standards across large‑scale facilities.
Brings extensive experience across public and private sectors, including HM Prison Service, HM Forces, and over 20 years in security management, with a strong foundation in FM leadership.
Brings over 20 years’ FM experience across hard and soft services, leading multi‑site portfolios in retail, manufacturing, engineering, and office environments, and managing diverse teams across multiple disciplines.
Brings 2 years’ experience within the police force, followed by 7 years in the security industry, delivering effective service across a wide range of environments.
Brings 25 years’ experience in the pharmaceutical industry, combined with extensive Health & Safety leadership, ensuring strong quality management, compliance, and accreditation across operations.
Brings 12 years’ experience in Health and Safety, with a strong focus on the manufacturing sector, ensuring best practice and compliance across operations.
Brings 10 years’ experience in sales, progressing from Sales Representative to Senior Account and Contract Management, and contributing strong commercial leadership since joining Pinnacle Group in 2022.
We believe that happy, well-trained staff deliver the best results. That’s why we invest in regular training, development, and innovation. Our high staff retention rate means you benefit from continuity, trust, and a team that truly understands your needs.
Whether it’s a cleaner who knows your building inside out or a security officer who greets your team every morning, our people make the difference.
Get in touch to see how we can support your business.