Searchlight Capital, a private equity firm, and Ares Management, an alternative investment manager, led a £500m ($634m) investment in RSK Group, a company specialising in the delivery of sustainable solutions. “RSK is very pleased to welcome a new group of investors and further strengthen our relationship with Ares. This strategic partnership marks a pivotal moment for RSK as we take another step towards our long-term vision of becoming the world’s largest and most trusted provider of sustainable solutions. Searchlight and Ares’ expertise in our industry, combined with their track record of supporting growth initiatives, will be instrumental as we execute on our M&A strategy and expand our service offerings. After three decades, RSK remains committed to delivering environmental and engineering services to help government and business clients around the world achieve a more sustainable future. The opportunities for RSK increase at pace," Alan Ryder, RSK Group Founder and CEO.