Siddharth Venkataramakrishnan / Financial Times:Wise reports H1 2021 revenue rose 33% YoY to £256.3M as pre-tax profits dropped to £18.8M from £20M in H1 2020; headcount grew 32% YoY to 2,883 — Currency exchange fintech listed in London in July with a valuation close to £9bn — Profits at currency exchange …