By Lars Mucklejohn For six decades, the global payments industry has been dominated by Visa and Mastercard. In 2021, the American giants had 99 per cent market share of UK debit and credit card payments. Cue Volt. Founded in 2019, the London-based fintech start-up is building a global real-time payment network to challenge the duopoly and shift countries’ reliance on cards. Most recently valued at more than $350m (£280m) in a 2023 funding round led by Silicon Valley investor IVP, Volt is live in 31 countries, including Brazil, Australia and the UK – where it secured a licence to offer e-money …