KIRSTIN RIDLEY and RACHEL SAVAGE A London judge ordered Mozambique to allow access to documents held in state offices or risk derailing a blockbuster London lawsuit against Credit Suisse, shipbuilder Privinvest and others over the $2 billion "tuna bond" case. The tuna bond or "hidden debt" scandal, one of Africa's most high-profile corruption cases of recent years, has triggered a spate of litigation from Maputo to Washington. But the London case could establish whether one of the world's poorest countries can secure compensation and restitution. Judge Robin Knowles, however, told the High Court in London that Mozambique had failed in…