By Lizzy Buchan Consumer champion Martin Lewis has said he would “rather wire my nipples to electrodes” than be Prime Minister after focus groups suggested he should lead the country. The Money Saving Expert founder, who is considered one of the country’s most trusted voices, took to social media to stamp out any speculation he had his eye on entering Downing Street. It came after his name was repeatedly raised as someone who would make a good PM in a focus group of 50 voters for the BBC’s Sunday with Laura Kuenssberg programme. Other names suggested as better PMs were Sir Alex Ferguson, Alan …