The Nigerian gas deal, the Irish impresario and the £8bn ruling amid claims of bribery

Officials allege contract was corruptly procured by business duo behind P&ID as saga of energy project and secretive tribunal heads for high court

It has been described as one of the most extraordinary cases ever to come before the high court, involving an Irish impresario, an alleged $50,000 bribe stuffed into a bag and potentially one of the biggest payouts in legal history.

The saga of two Irish businessmen, Michael Quinn and Brendan Cahill, who promised to revolutionise Nigeria's energy sector, will be at the centre of a high court trial early next year.