Over the years, Britain has made her own, unique contribution to Europe. We have provided a haven to those fleeing tyranny and persecution. And in Europe's darkest hour, we helped keep the flame of liberty alight. Across the continent, in silent cemeteries, lie the hundreds of thousands of British servicemen who gave their lives for Europe's freedom.

When people's love is divided by law, it is the law that needs to change.

Since 2004, Britain has been the destination for 1 in 5 of all inward investments into Europe. And being part of the Single Market has been key to that success.

Britain could make her own way in the world, outside the EU, if we chose to do so. So could any other Member State. But the question we will have to ask ourselves is this: is that the very best future for our country? We will have to weigh carefully where our true national interest lies.

I know that the United Kingdom is sometimes seen as an argumentative and rather strong-minded member of the family of European nations. And it's true that our geography has shaped our psychology. We have the character of an island nation - independent, forthright, passionate in defence of our sovereignty.

Conservatives believe in the ties that bind us. Society is stronger when we make vows to each other and we support each other. I don't support gay marriage in spite of being a conservative. I support gay marriage because I am a conservative.

The next Prime Minister walking through that door will be me or Labour Party leader Ed Miliband, you can choose an economy that grows, that creates jobs, that generates the money to ensure a properly funded and improving National Health Service ... and a government that will cut taxes for 30 million hard-working people ... or you can choose the economic chaos of Ed Miliband's Britain.