"In just over two weeks, our government is going to unveil the most pro-enterprise, pro-business budget for a generation," Cameron wrote in the News of the World newspaper.

"It's going to be a budget for the doers and the grafters, the builders and the businesswomen, all those entrepreneurs who create jobs and money for the rest of us.

"We're cutting the business taxes and dealing with the nightmare of red tape and hold-ups that make life impossible for entrepreneurs."

He was to tell delegates: "We are taking on the enemies of enterprise." These included government bureaucrats mired in rules and regulations, foot-dragging local authority officials and public sector procurement managers favouring big business over smaller firms. He said a new Enterprise Allowance scheme would help people kick-start their business.

"If you've got an idea and want to start a business, go for it. If you've got a business and want to grow, tell us how we can help you," he wrote.

"Get a business plan together, and if it looks good, we will give you up to £2,000 ($3,250, 2,330 euros) to get started." Cameron added: "Think back over centuries of history and this country has always out-competed, out-hustled, out-innovated, and out-enter prised our competitors. It's our generation's turn to show we can do the same." His finance minister George Osborne said Saturday that his budget would set up "enterprise zones" across Britain to boost growth in run-down areas, saying they would be "centres for new businesses and new jobs where taxes will be even lower and more restrictions on growth removed." And he insisted there was no alternative to the governing coalition's plans to slash Britain's record deficit, totalling around £155 billion ($250 billion, 180 billion euros), eliminating it in four years.

"We spend £120 million every day just paying the interest on the national debt," he said. He also hinted that a planned one-penny-above inflation rise in petrol tax might not go ahead, as the unrest in the Arab world pushes oil prices higher.

"When it costs £1.30 for a litre of petrol, £80 to fill up a family car, I know people feel squeezed," he said.