Eurosceptics led by Conservative Bernard Jenkin have just launched a paper challenging whether the single market does benefit the UK.
Jenkin and other Eurosceptics say UK exports of manufactured goods to the EU are equivalent to less than 8.7% of UK GDP. They also say the burdens and costs of the EU single market are hampering the UK economy and claim more jobs could be created if we were outside it.
Centrica's boss warns an EU referendum risks "total destabilisation" for businesses; the Next chief suggests that view is "scaremongering."
There will be sympathy, yes. But will they agree with him? No.
Conservative MPs said their "achievable" proposals to change Britain's role in Europe do not represent an ultimatum to the Prime Minister.