The Series C financing comprised £26m in equity led by Anthos Capital and £20m in debt from Mars Capital.
"I am absolutely delighted that less than four months after Railsbank evolved to become Railsr, we have achieved another milestone and closed our Series C, a significant step on our route to profitability."
The funding round was co-led by MiddleGame Ventures and Ventura Capital to support international growth and product expansion.
"We are thrilled to have the support of world-class investors who bring a highly strategic network to help us continue with the vision (with zero pivots) that Clive [my co-founder] and I started with in 2016."