How can we be sure that the Lisbon Treaty will not have an impact on our corporation tax system?

The legally binding guarantee agreed in June by the 27 EU member States couldn’t be clearer.

The guarantee provides “Nothing in the Treaty of Lisbon makes any change of any kind for any Member State, to the extent or operation of the competence of the European Union in relation to taxation. “

If we vote YES on October 2nd this guarantee will have the full force of international law.