DAVID Cameron is in Glasgow making a speech to the CBI on independence tonight.

Mr Cameron will highlight trade links between Scotland and the rest of the UK and says the success is down to access to the larger single market

He is expected to say: "This is one of the oldest and most successful single markets in the world.

"Scotland does twice as much trade with the rest of the UK than with the rest of the world put together, trade that helps to support one million Scottish jobs.

"For some industries, the proportion of trade with the rest of the UK is even higher - 90% of Scottish financial services' customers are in England, Wales and Northern Ireland.

"There's the famous gaming industry, cutting-edge sub-sea technology and life-saving biomedicine, all selling far more outside Scotland than inside."