YFM Equity Partners (YFM), the specialist private equity fund manager, has invested £4.5m from its managed funds into Collaborative Project Management Services (CPMS) to support the continued growth of the business through ongoing new product and market development.  YFM’s investment is the sixth investment from its £46m buyout fund.  CPMS provides multidiscipline Project Management to the railway system across track, signalling, telecoms, civils, and overhead lines.  CPMS has built a very strong reputation for excellence and is one of only seven companies to be awarded top marks under Network Rail’s Performance Supplier feedback process.