Dear Mr Cameron, We are gravely concerned at the way the present Government has forced through the Lisbon Treaty without first consulting the people by a National Referendum - which it promised to do. We are acutely aware of the serious implications this Treaty could have upon us as a nation. For instance the consequences of a foreign power having jurisdiction over our long-established laws and liberties are unknown - but likely to be very unwelcome. As the Leader of the main Opposition party we are therefore appealing to you with a request that you make an immediate public statement that should you at the next General Election be able to form the new Government you will undertake to hold a Referendum at an early date to determine the nation\'s approval or otherwise of the Treaty. Further, that in the event the Lisbon Treaty is rejected by a simple majority, your Government will take the necessary steps to withdraw the United Kingdom from the Treaty at the earliest opportunity.