How to Write a Dissertation Methodology — UK Guide
UK Academic Writing Guide | Reviewed by the Projectsdeal Editorial Team | Updated June 2026
Quick AnswerA methodology explains how you did your research and why. A strong UK methodology covers: research philosophy (e.g. positivism/interpretivism), approach (deductive/inductive), design (qualitative/quantitative/mixed), data-collection methods, sampling, data analysis, ethics, and reliability/validity — each justified, not just described. Use the ‘research onion’ as a structure.
Overview
The methodology chapter is marked on justification: it is not enough to say what you did — you must explain why each choice was appropriate for your research question. Saunders' ‘research onion’ is a popular framework for structuring it from philosophy down to techniques.
How to Write a Methodology: Step by Step
State your research philosophy
Explain your stance (e.g. positivism, interpretivism, pragmatism) and why it suits your question.
Explain your approach
Deductive (testing theory) or inductive (building theory) — and why.
Justify your design
Qualitative, quantitative or mixed methods, with reasons linked to your aims.
Describe data collection
Your methods (survey, interviews, secondary data) and instruments, with justification.
Explain sampling
Your population, sampling technique and size, and why they are appropriate.
Outline data analysis
How you will analyse the data (e.g. thematic analysis, regression, SPSS) and why.
Address ethics and rigour
Ethical approval and safeguards, plus reliability, validity (or trustworthiness) and limitations.
Justification Is Everything
The single biggest differentiator in methodology marks is justification. For every choice — philosophy, design, method, sample, analysis — explain why it is the best fit for your research question and acknowledge alternatives you rejected.
Common Mistakes to Avoid
Describing without justifyingListing what you did without why. Justify every methodological choice.
Methods that don't fit the questionChoosing a method for convenience. Align methods to your research aims.
Ignoring ethicsOmitting ethical approval and safeguards loses marks and is often required.
No limitationsFailing to acknowledge limitations looks naive. Address them honestly.
Frequently Asked Questions
What should a dissertation methodology include?
Research philosophy, approach, design, data-collection methods, sampling, data analysis, ethics, and reliability/validity — each justified in relation to your research question.
What is the research onion?
Saunders' research onion is a framework that structures methodology in layers, from research philosophy on the outside through approach, strategy and choices to data-collection techniques at the centre.
How long is a methodology chapter?
Often around 15–20% of a dissertation, but follow your handbook. Depth of justification matters more than length.
Qualitative or quantitative — which should I choose?
Choose based on your research question: quantitative for measuring and testing relationships, qualitative for exploring meaning and experience, or mixed methods to combine both.
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