GBM, based in London and Glasgow, has a £40m turnover and 2,000 employees, mostly in cleaning, security and janitorial services.
ABM’s services include more technical building services engineering and maintenance. It is one of the largest facilities management contractors in the USA, with $4.8bn annual revenues. It started out in 1909 as a firm of San Francisco window cleaners.
“With the acquisition of GBM, we saw a tremendous opportunity to accelerate our growth strategy throughout the UK,” said ABM president and CEO Henrik Slipsager. “GBM is a great fit for our organization because its array of services complements ABM’s, and we’re confident this partnership will serve as a key platform for expanding internationally with new and existing clients.”