British Gas: 'We comply with all EU and UK laws'
A British Gas spokesman last night denied that any manipulation had occurred.
Our compliance procedures and trading principles are clear.
They require us to comply with all European Union and UK laws and we have done so.
More manipulation? Claims electricity market also rigged
A former energy trader has told ITV News the electricity market has been rigged and it is "worse" than the gas market.
Could gas prices have been rigged?
Another market, another investigation. The Energy and City watchdogs start investigations into allegations of traders fixing the gas price.