Vistra, a business consulting company, completed the acquisition of Radius, an international expansion services provider, from Hg Capital, a UK-based private equity firm. Financial terms were not disclosed. “The combination of Vistra and Radius creates a leading global provider of quality international expansion services. Vistra is the ideal partner for Radius given our values and culture align so closely. We are excited about the future opportunities for our clients and employees,” Stephen Chipman, Radius CEO.