Providing its cleaning services to all 40 NICTS, the two-year contract will kick off 1 April.
Mount Charles managing director Cathal Geoghegan said: “We are delighted to acquire the Northern Ireland Courts and Tribunals Service as the latest partner within our cleaning division and look forward to providing each of their sites with our signature professional service.
“This contract is another step on our ‘Road to £50m’ strategy in which we have committed to achieve revenue of £50m by 2020. Other recent wins with NI Ambulance Service, Terex, CAFRE and Northern Regional College mean that we are firmly on track to meet that target.
“Mount Charles has started 2018 as we mean to go on. Our vision is to be both a business partner and employer of choice throughout Ireland and the UK, based on the delivery of the highest standard of service and, with continued high levels of engagement and effort from our growing employee base, we are confident we are.”