ONE of Blackburn's most prominent accountancy firms has announced a major boost to the business with 15 new clients joining. PM+M, based on Greenbank Technology Park, Challenge Way, says that the new clients operate across a wide variety of sectors including wholesale distributors, insurance brokers, IT firms, construction specialists, manufacturers, and solicitors. The companies include F D Sims, Cultura, Metrol Springs and Customs Connect, which will be working with the Blackburn accountants' audit, accounting and advisory team. PM}+M partner Helen Clayton said: “Despite all the challenges the pandemic has thrown up, the past few months has been a strong period of growth for the firm.