When grilled in parliament today, the spokesmen for the big six energy companies blamed the rising cost of politicians.
"We are competing in the global wholesale market for politicians" said one spokesman, "keeping them under control is becoming more and more expensive."
"It used to be that an MP would cost little more than a brown envelope full of five pound nodes -per year. Now that wouldn't cover a months worth of heating in one of their second homes -so they are demanding more. That cost gets reflected in customer bills".
Another spokesman emphasised "now that we are buying gas from abroad, we also need to pay for politicians on the continent and in russia"
In response, David Cameron said that a recent deal signed with the chinese government to develop a nuclear power station will fix the price of politicians for twenty years -and ensure that China's costs of doing business in the UK will be fixed.