The introduction sets up your whole dissertation: it tells the reader what you are investigating, why it matters, and how the dissertation is organised. A weak introduction leaves examiners unsure of your purpose; a strong one frames everything that follows. This complete UK guide explains what a dissertation introduction must contain, how long it should be, and how to write each element.
What the Introduction Must Do
It must establish the topic, context, problem and aim, and orient the reader to the structure. By the end, the examiner should know exactly what you are researching, why, and how the dissertation will proceed.
Essential Elements
✓ Background and context — the wider area.
✓ Problem / rationale — the gap or issue.
✓ Aim and objectives — what you will achieve.
✓ Research questions.
✓ Scope — limits of the study.
✓ Structure — an outline of the chapters.
How Long Should It Be?
Typically around 10 percent of the dissertation, though this varies. It should be substantial enough to set up the project properly but not stray into the literature review or methodology.
Stating Aim, Objectives and Questions
Be precise. The aim is your overall goal; objectives are the steps to reach it; research questions are what you will answer. These must align with each other and with your conclusion. See our research question guide.
Write (or Revise) It Last
Many students draft the introduction first but revise it last, once the dissertation is complete, so it accurately reflects what the study actually did. An introduction that matches the finished work reads far more convincingly.
Common Mistakes and Tips
✓ Vague aim or no research questions.
✓ Drifting into the literature review.
✓ No structure outline.
✓ Misaligned aim and conclusion. Tip: cover all six elements and revise the introduction once the dissertation is finished.
How Projectsdeal Helps
Dissertation writing service, PhD dissertation help and thesis writing help.
Frequently Asked Questions
What should a dissertation introduction include?
Background, problem or rationale, aim and objectives, research questions, scope and a structure outline.
How long is a dissertation introduction?
Typically around 10 percent of the total, though it varies.
What is the difference between aim and objectives?
The aim is your overall goal; objectives are the steps to achieve it.
Should I write the introduction first or last?
Draft it early but revise it last so it matches the finished study.
Does the introduction include the literature review?
No — it sets up the study; the review is a separate chapter.
What is the rationale?
The justification for why the study is needed — the gap or problem it addresses.
Should I outline the chapters?
Yes — a brief structure outline helps orient the reader.
How do I make aim and conclusion align?
Ensure your conclusion answers exactly the aim and questions stated in the introduction.
Related Study Guides
How to Write a Dissertation • How to Write a Research Question • How to Write a Literature Review • How to Write a Conclusion
Need Expert Academic Help?
ProjectsDeal provides trusted dissertation, thesis, and essay writing support for UK university students. Get matched with a specialist in your subject area.