By Lars Mucklejohn Zilch has reported its first month of operating profit four years after launching ahead of a much-anticipated stock market listing. The London-based payments firm, launched in 2020, said it achieved an operating profit in July and surpassed a revenue run rate of $130m (£99m) in the same month. It did not disclose the size of July’s profit. The firm added that it almost doubled its revenue in the year to March 2024. It previously reported £30m in revenue for the year ending on 31 March 2023. Zilch, valued at $2bn (£1.65bn) last October, said the pace at which it had become pr…