Executive summary- The executive summary is the backbone of the business plan and it should include a brief background of the business concept, company's objective's or your plan, ownership structure, management team, service offering, target market(s), competitive advantages, marketing strategy and high-level financial details like expected profit, required funding etc. It helps the bank or finance executives to get an idea of your business.
An exit strategy- A business plan becomes perfect only when you write a good exit strategy for the investor. It is important to note that investors generally have a 3 year horizon within which they want to exit. The author is the partner at IntelligentQ. IntelligentQ specializes in Integrated Marketing Communications: Business Content, Sports Content, Business Plans.
A brief account of how the company began- You should mention in your business plan the history behind the formation of you company and the background of the founders and directors.
A business plan should be detailed. In listing your products and services for example, you should not really stop by just enumerating them. You also should write down the descriptions and scope of your products and services, touch base on production and identify means on how you can market your "brain - child" to your targeted niche.