Serco, which runs services from UK immigration centers and prisons to the Dubai metro, said the acquisition would add to its existing operations in the UAE. 

The company, which now generates 43 percent of group revenue from outside of the UK, said earlier this year that it is targeting international expansion. 

Serco has won almost 2 billion pounds of work to date in the second half of the year and said that it expected to meet full-year expectations despite ongoing UK and US austerity measures.

JBI specialises in integrated facilities management services and has over 130 staff members located at various sites in Abu Dhabi. The company, which was a wholly-owned unit of Mubadala, manages several Abu Dhabi properties including Paris Sorbonne University, New York University and Sowwah Square.