Prime Minister David Cameron is looking to Southeast Asia to boost the UK’s role in Islamic finance. It’s the Bank of England he needs to convince first, say Shariah-compliant lenders based in Britain. Central bank rules require lenders to hold easy-to-sell assets as protection against short-term funding shocks. Most are off-limits for Islamic banks because they pay interest. Cameron visited Malaysia last year to build on a pact to promote bilateral engagement in the industry and created an Islamic Finance Task Force in March. Britain’s six Shariah-compliant lenders will struggle to grow unless regulators adapt bank liquidity rules or highly rated borrowers issue sukuk in pounds.