How to Write a Literature Review (UK Dissertation Guide 2026)

📖 Literature Review10 min readUpdated 7 May 2026

The literature review is the chapter where most UK undergraduates lose marks unnecessarily. The mistake is almost always the same — they describe the literature instead of critically engaging with it. This guide explains how to write a literature review that earns 2:1 or First Class marks at a UK university in 2026.

What is a literature review (in UK academic terms)?

A UK literature review is not a summary of what other people have written. It’s a critical synthesis that:

• Identifies what’s known about your topic
• Highlights debates, contradictions and gaps
• Positions your research within those gaps
• Justifies why your research matters

How to find UK academic sources

Start with these databases (your university library gives you free access):

• Google Scholar — broad coverage
• JSTOR — humanities, social sciences
• EBSCO Business Source Premier — business, marketing
• Westlaw / LexisLibrary — UK law
• PubMed / NICE / Cochrane — health, nursing, medicine
• Scopus / Web of Science — STEM
• UK government data: ONS, gov.uk, BSI standards

How many sources do I need?

Level	Typical source count
UG essay (2,000 words)	10–15
UG dissertation (10,000 words)	40–60
Master’s dissertation (15,000 words)	60–90
PhD literature review chapter	150+

The structure of a strong literature review

Avoid the “author-by-author” structure (Smith says X, Jones says Y). Instead, organise by themes or debates.

1. Introduction — what’s the scope, and how have you searched?
2. Theme 1 — synthesis of literature on theme 1
3. Theme 2 — synthesis of literature on theme 2
4. Theme 3 — synthesis on theme 3
5. Identifying the gap — what’s missing
6. Conclusion — how your research addresses the gap

What “critical engagement” looks like

Descriptive (low marks): “Smith (2020) found X. Jones (2022) found Y.”

Critical (high marks): “Smith (2020) found X, but his sample of 30 UK undergraduates limits generalisability. Jones (2022) extended this to a stratified sample of 500 across UK Top universities, finding Y — a more robust finding that challenges Smith’s earlier conclusion.”

Common mistakes UK examiners flag

1. Pure description, no critical comment
2. Author-by-author structure
3. Outdated sources (older than 5 years for fast-moving fields)
4. Over-reliance on textbooks (use peer-reviewed journals)
5. Missing UK-specific evidence
6. No identified research gap
7. No connection to your own research questions