Alistair Darling will unveil his first Budget wanting to establish a reputation for prudence, fairness and simplification of the tax system, writes Chris Giles. After inheriting an economy that appeared in good shape, the cracks are showing. Economic growth is projected to slow sharply and the public finances appear extremely tight. At times like this, doing nothing might be the most sensible course, but few chancellors like to be seen doing little as the economy faces turbulent storms from around the world.