Curve, the London-based fintech that combines multiple cards and accounts into one smart card and an app, has secured a Series C finding round of $95 million. The financing was led by IDC Ventures, Fuel Venture Capital and Vulcan Capital (the investment arm of the estate of Microsoft co-founder and philanthropist Paul G. Allen), with participation from OneMain Financial, the US personal finance company, and Novum Capital. Several previous investors also participated. The fundraise brings the total investment in Curve to almost $175 million. Curve says it plans to use the funds to…