William Wallace, Robert the Bruce, David Cameron.

It's ironic but if there is a yes vote in the referendum in Scotland on Thursday, and it is once again ruled from Edinburgh rather than London, it will be in large part thanks to David Cameron, the incumbent prime minister of the United Kingdom. Not only did he have to give his government's consent for the referendum to go ahead, but he also ruled out the option of what is now being referred to as devo-max, the devolving of more powers to the Scottish parliament, and instead insisted on a straight yes or no choice to the question: Should Scotland be an independent country?

With the opinion polls at the time showing a healthy majority in favor of maintaining the Union, it was decided a straight yes/no independence referendum would result in vote in favor of keeping the union. However, that is looking a lot less like a sure bet now, with the polls showing the yes and no votes running neck and neck.