London Stock 2026-07-23 10:15:15London Stock Exchange Warns 200 Firms May Move Listings to US, Stamp Duty Under FireThe London Stock Exchange warns up to 200 companies could shift primary listings to the US in a worst-case scenario, costing the UK Treasury an estimated £2 billion. The UK's 0.5% stamp duty on share trades is the central policy issue hurting London's competitiveness.730