The gas game
An exclusive Guardian investigation examines claims that gas traders are exploiting the loosely regulated markets by manipulating indices set by price reporting agencies
Gas price fixing investigation sparked by bank trades
Citigroup says its traders made two of the deals which prompted investigations by Financial Services Authority and Ofgem
Ofgem 'failed to act' on gas price-fixing warning
Energy watchdog confirms it was tipped off about possible manipulation of wholesale market on 17 October
Gas prices: 'Ofgem ... they have no powers' - video
Energy price manipulation 'could account for at least 50% of bill rises'
Gas-market rigging: the lying game
Ed Davey warns of punitive fines if energy price-rigging claims proven
Whistleblower to testify to commission regulators on alleged gas-price fixing
Kipper Williams on gas price manipulation claims
Energy secretary pledges action on gas price manipulation
Second gas price reporter raises concerns about market manipulation
Gas price manipulation: how does it affect household bills? Expert's view - video
Gas prices: Labour calls for transparent trading after whistleblower claims
Gas prices: FSA examines whistleblower's claims of 'Libor-like' manipulation
How the £300bn a year wholesale gas market operates
Gas markets: 'The index is prone to manipulation' - video
Gas markets: 'If it was manipulation, it's been successful' - audio recording
ICIS Heren employee: 'There is no official thing to do when something's gone wrong' - audio recording
Gas markets: 'We now think we fucked that data assessment up' - video
Energy market manipulation 'does go on' - gas trader reveals widespread suspicions
'Bang, bang, bang: six times people have tried to force the price down' – the suspicious trading behaviour which led to an FSA investigation
