Founded in 1972, this Surrey company has evolved from a small groundworks firm to a large construction contractor, offering civil engineering, plant hire, reinforced concrete frames and residential development. Its clients include Berkeley, and Crest Nicholson. Led by founder and chairman Tom O’Brien, 71, the business grew sales 24% to £306.8m in 2018, buoyed by increased activity in the southeast.

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Company details
Year2018
Rank71
CompanyO’Halloran & O’Brien
ActivityConstruction contractor
LocationSurrey
Sales £m306.8
Operating profit £m25.8
Main shareholdersO'Brien Family (100%)
Staff124
Founded1972
Websitewww.ohob.com

If applicable:

* supplied by Company   † annualised figure   ‡  profit = ebitda