A business plan sets out what a business will do, how it will make money, and why it will succeed. Whether for a university assignment or a real venture, a strong plan combines a compelling case with realistic numbers. This complete UK guide explains the standard business plan structure, what each section must cover, how to build financial projections, and the mistakes that undermine otherwise good plans.
What Is a Business Plan?
A business plan is a document setting out a venture's goals, strategy, market and finances. It serves two audiences: investors or lenders deciding whether to back it, and the founders themselves as a working roadmap.
Standard Structure
✓ Executive summary.
✓ Business description and objectives.
✓ Market analysis — customers and competitors.
✓ Products / services.
✓ Marketing and sales strategy.
✓ Operations and team.
✓ Financial projections.
Writing the Market Analysis
Show you understand your customers, market size and competitors, backed by research. A credible market analysis — including who the customer is and why they will buy — is what convinces readers the opportunity is real.
Building Financial Projections
Include realistic sales forecasts, costs, cash flow and break-even. Investors scrutinise the numbers closely, so base them on stated assumptions rather than optimism. Over-optimistic projections are a common reason plans lose credibility.
The Executive Summary
Write a compelling executive summary last — it is the first thing read and often decides whether the rest is read at all. It should capture the opportunity, the model and the ask in a page. See our executive summary guide.
Common Mistakes and Tips
✓ Over-optimistic financials.
✓ Weak market research.
✓ Vague strategy.
✓ No clear customer. Tip: ground every claim in research and realistic, assumption-based numbers.
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Frequently Asked Questions
What is a business plan?
A document setting out a venture's goals, strategy, market and financial projections.
What sections does a business plan include?
Executive summary, business description, market analysis, products, marketing, operations and finances.
How do I write financial projections?
Base realistic sales, cost, cash-flow and break-even forecasts on stated assumptions.
What goes in the market analysis?
Customer profile, market size and competitor analysis backed by research.
When should I write the executive summary?
Last, as it is read first and often decides whether the plan is read further.
How long is a business plan?
It varies with purpose — clarity and credibility matter more than length.
What is the most common business plan mistake?
Over-optimistic financial projections not grounded in evidence.
Who reads a business plan?
Investors, lenders and the founders themselves as a roadmap.
Related Study Guides
How to Write an Executive Summary • How to Write a SWOT Analysis • How to Write an MBA Assignment • How to Write a Report
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