About from company website
Founded in 1972 by Tom O'Brien, O'Halloran & O'Brien (OHOB) has evolved from a family business into a leading UK construction group, built on integrity, strength, and family values. The company specialises in complex, multi-disciplinary project delivery across the infrastructure and construction sectors, successfully delivering integrated construction and engineering solutions for over 50 years. Their foundation in groundworks has expanded to encompass reinforced concrete frames, civil engineering, and infrastructure, blending traditional craftsmanship with modern methods.
OHOB places a strong emphasis on its people, fostering a culture of respect, collaboration, and opportunity through its dedicated OHOB Training Academy. This commitment extends to quality, with ISO 9001 and ISO 14001 certified management systems ensuring consistency and excellence. Health and safety are paramount, with a dedicated team and rigorous training standards, including SSSTS/SMSTS for supervisors, aiming to surpass client expectations.
The company is also committed to social value, embedding it in recruitment, training, and community engagement. Initiatives like the 'Change Your Script' program and pre-employment bootcamps, delivered in partnership with CITB, aim to create sustainable talent pipelines and increase employment opportunities within the construction sector, particularly for local people in London and the South East.
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Accreditations from company website
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Questions about OHOB from the record on this page
What does OHOB do?
O'Halloran & O'Brien (OHOB) is a respected UK construction group with over 50 years of experience, delivering complex, multi-disciplinary projects across infrastructure and construction sectors. Their listed services include Groundworks, Civil engineering, Concrete works, Demolition and Refurbishment.
Where is OHOB based?
OHOB is registered at O'Brien House, 197-199 Garth Road, Morden, SM4 4NE, in London.
What areas does OHOB cover?
OHOB states that it works across London and South East.
How many people work at OHOB?
Accounts filed for the year to 2025 report 4 employees, which places the company in the 1-9 employees band.
What is OHOB's turnover?
OHOB does not disclose turnover: UK small-company accounts are not required to. Based on creditors in its filed accounts, turnover is likely to fall between £340k and £1.4m. This is an estimate, not a filed figure.
Is OHOB still trading?
Companies House lists OHOB as active, with accounts most recently made up to 2025-03-31.
What accreditations does OHOB hold?
OHOB displays ISO 9001, ISO 14001, CITB, NPORS, PASMA and City and Guilds on its website.
What sectors does OHOB work in?
OHOB works in Infrastructure, Commercial, Industrial and Residential.
When was OHOB established?
OHOB was incorporated on 2008-01-30, though the company says it has traded since 1972.