The importance of business planning is widely documented; however, guidance as to what constitutes good business planning is less clearly defined. This article aims to redress that imbalance by describing 10 of the most common mistakes that occur in business plans. It was written by Alan Gleeson who is an expert in his field. Alan is the Managing Director of Palo Alto Software, Ltd., creators of Business Plan Pro® 2007. He holds an MBA from Oxford University and an MSc from University College, Cork, Ireland. For further information on business planning visit http://www.bplans.co.ukand http://www.paloalto.co.uk/