Literature Review Examples: The Complete UK Student Guide

Whether you are writing your first-year undergraduate essay, a postgraduate dissertation, or a doctoral thesis, the literature review is the chapter that can make or break your work. It is also the chapter most students get wrong in the same way: either it describes what each source says without analysis, or it is too short, or it lacks the critical engagement that UK markers actually look for. This guide exists to fix all of that.

Starting with real literature review examples and working through every stage of the process, this comprehensive resource covers what a literature review is and why it matters, the different types you will encounter at UK universities (including the systematic literature review), how to structure and start one, how long it should be at different degree levels, what a genuinely strong literature review example looks like compared to a weak one, and how to write the literature review chapter for your dissertation without getting stuck.

Literature Review Examples: What Is a Literature Review?

What is a literature review? A literature review is a critical, structured synthesis of existing academic research on a specific topic or question. It is not a summary of everything ever written on a subject. It is a purposeful, analytical engagement with the most relevant sources, showing what is known, where scholars agree or disagree, what remains unresolved, and how your own research fits into that conversation.

A literature review is “a survey of scholarly sources on a specific topic [that] provides an overview of current knowledge, allowing you to identify relevant theories, methods, and gaps in the existing research.” That definition captures the key distinction: a literature review is analytical, not descriptive.

Why does a literature review matter?

UK markers assess literature reviews on one primary question: does this student understand the field well enough to position their own work within it? A strong literature review does five things simultaneously:

1. Demonstrates breadth: You have identified and engaged with the key literature in your field.
2. Shows critical judgment: You have evaluated the quality, relevance, and limitations of each source, not just reported its findings.
3. Identifies the gap: You have shown where the existing research falls short and why your study is needed.
4. Builds your theoretical framework: You have drawn on the most relevant theories and models that will underpin your own research.
5. Justifies your methodology: Your approach to the research is grounded in and consistent with the existing literature.

The most common literature review mistake at UK universities is description without analysis. Listing what each source says, Author A says X, Author B says Y, is not a literature review. It is an annotated bibliography. A literature review synthesises, compares, and evaluates. 

Pertaining to common mistakes, our piece on Common Reasons UK Students Fail Assignments & How to Fix Them? provides adequate information regarding common avoidable mistakes in all kinds of academic assignments.

Where does the literature review appear in your work?

Types of Literature Review: Which One Do You Need?

Before you start writing a literature review, you need to know which type your assignment, dissertation, or module requires. The wrong type, even if well written, will not meet the marking criteria.

1. Narrative (traditional) literature review

The narrative or traditional literature review is the most common type for undergraduate dissertations, Master’s dissertations, and standalone literature review assignments in the UK. It reviews the key literature on a topic, synthesises findings thematically or chronologically, and critically evaluates the state of knowledge in the field. According to Wikipedia’s entry on systematic reviews, ‘the term literature review without further specification refers to a narrative review.’

A narrative review does not follow a strict, pre-registered protocol. The researcher selects sources based on relevance and quality, and the synthesis is interpretive rather than statistical.

2. Systematic literature review

A systematic literature review is a structured, reproducible, protocol-driven review that follows explicit inclusion and exclusion criteria to identify all relevant studies on a specific research question. It is most common in health sciences, medicine, psychology, and evidence-based policy, but is increasingly used across social sciences.

Systematic reviews typically follow the PRISMA guidelines (Preferred Reporting Items for Systematic Reviews and Meta-Analyses), which set out how the search, screening, and synthesis process should be documented and reported.

3. Scoping review

A scoping review maps the breadth of evidence on a topic without the exhaustive, formal methodology of a systematic review. It is used when the field is new, when the literature is heterogeneous, or when you want to identify key concepts and research gaps before undertaking a more focused systematic review.

4. Meta-analysis

A meta-analysis goes beyond a systematic review by statistically combining the results of multiple quantitative studies to produce a pooled estimate of an effect. It is a research method in its own right, not typically required at undergraduate or Master’s level.

If your module requires a standalone systematic literature review as an assessed piece of work, our research paper writing service includes full support for systematic and narrative literature reviews at all levels.

Literature Review Examples: Good, Better, and Distinction-Level Writing Compared

The most effective way to understand what a literature review example at distinction level looks like is to compare it directly with weaker versions of the same content. The examples below are based on a Master’s dissertation on mental health and social media, a common topic across psychology, sociology, and health sciences in UK universities. Oxford University Press’s learning resources similarly use a bad, better, best comparison approach to illustrate the same principle.

Literature review example, descriptive (2:2 / C grade)

Example Extract, Descriptive (Weak)

Smith (2021) found that social media use is associated with higher levels of anxiety in adolescents. Jones (2022) also found a link between social media and depression. Williams (2023) studied university students and found that those who used Instagram for more than three hours per day reported lower self-esteem. Brown (2024) suggested that social media can be harmful to mental health.

Why this is weak: This extract describes each source in isolation, in the order the researcher happened to read them. There is no synthesis, no comparison, no critical evaluation, and no sense of a developing argument. The reader learns what each author found, but not what the literature as a whole tells us, where researchers disagree, or what this means for the current study.

Literature review example, analytical (2:1 / B grade)

Example Extract, Analytical (Stronger)

A substantial body of research links social media use with poor mental health outcomes in young people (Smith, 2021; Jones, 2022; Williams, 2023). However, the relationship is more nuanced than a simple causal claim. While Smith (2021) and Jones (2022) identified associations between high-frequency social media use and anxiety and depression respectively, Williams (2023) found that platform type mediates the effect, Instagram use specifically, rather than social media broadly, was associated with reduced self-esteem in university students. This suggests that research conflating different platforms may overstate the homogeneity of the relationship.

Why this is stronger: The extract groups sources thematically rather than treating them individually. It identifies a key distinction (platform type as a mediating variable) and draws an interpretive conclusion from the comparison. It is building an argument, not a list.

Literature review example, critical and synthetic (First / Distinction)

Example Extract, Critical and Synthetic (Distinction Level)

The relationship between social media use and mental health outcomes in young people has attracted substantial empirical attention, yet the literature remains methodologically fragmented in ways that limit the strength of causal claims. While correlational evidence consistently links high-frequency social media use with anxiety and depression (Smith, 2021; Jones, 2022), a critical examination reveals important heterogeneity: Williams (2023) demonstrates that platform-specific effects, particularly those associated with visual social comparison on Instagram, are confounded with broader frequency measures in earlier studies, calling into question their generalisability. Moreover, the majority of studies in this field rely on self-report measures of both social media use and mental health (Smith, 2021; Jones, 2022; Williams, 2023), a limitation noted by Brown (2024), who argues that objective usage data produces significantly different effect sizes. This methodological inconsistency suggests that the field is not yet in a position to make strong causal claims, and that research designs incorporating objective usage measurement and platform-specific analysis are needed, a gap this study addresses.

Why this is distinction-level: This extract does everything the 2:1 version does, and goes further. It critiques the methodology of the cited studies, identifies a specific weakness (self-report measures) that is supported by a source (Brown, 2024), draws a conclusion about the state of the field, and explicitly connects that conclusion to the gap the current study will address. This is what UK markers at First-class level are looking for.

Even if you check all the boxes, professional essay help service goes a long way in keeping your literature reviews, essays and other academic assignments consistent in their tone. Also aiming for distinction you must also know how many references are needed to support your literature review which brings you to the question, “How many references are needed for your essay?”.

Literature Review Structure: The Three Approaches Explained

Understanding how to structure a literature review is the single most important decision after you have done your reading. The structure you choose determines how readable, logical, and coherent your review will be, and whether it reads like a synthesis or a list.

There are three main structural approaches. The right choice depends on your subject area, the nature of the literature, and what best serves your research question.

Approach 1: Thematic structure (most common)

A thematic structure organises the literature into themes or topics rather than author by author or date by date. This is the most commonly used and most widely recommended approach for UK dissertations because it naturally encourages synthesis, you are grouping sources by what they say rather than who said it.

Thematic Structure, Worked Outline (Master’s dissertation on remote working and productivity)

Introduction. The shift to remote working: scale and context (Smith, 2020; CIPD, 2022)

2.Remote working and individual productivity: competing evidence  

2a. Evidence for productivity gains (Williams, 2021; Thompson, 2022)   

2b. Evidence for productivity losses (Jones, 2021; Brown, 2023)   

2c. Mediating variables: autonomy, home environment, technology access

3. Team collaboration and communication in remote settings

4. Wellbeing, isolation, and the boundaries of remote work

5. Research gaps: the absence of sector-specific longitudinal data

Conclusion: summary and justification for the current study

Approach 2: Chronological structure

A chronological structure traces the development of the literature over time, showing how thinking on a topic has evolved, what paradigm shifts have occurred, and how more recent work challenges or builds on earlier foundations. It works well for topics with a clear historical development, or where understanding the trajectory of research is itself important to the study.

When to use chronological structure

Use chronological structure when the development of the field over time is important to your argument, for example, reviewing how theories of leadership have evolved from the trait approach (1900s–1940s) through behavioural and contingency theories (1950s–1970s) to transformational and authentic leadership (1990s–present). Avoid it when the date of a study matters less than its theme or methodology.

Approach 3: Methodological structure

A methodological structure groups sources by research method, qualitative, quantitative, mixed-methods, rather than by theme or date. This is particularly useful for systematic literature reviews or for dissertations where the research methodology is itself a key focus of enquiry. It is less common at undergraduate level but frequently used in health sciences and evidence-based disciplines.

FAQs

What is a literature review?

A literature review is a critical, structured synthesis of existing academic research on a specific topic or question. It is not a summary of individual sources, it is an analytical engagement with the body of knowledge in a field that identifies key themes, debates, methodological approaches, and gaps in the existing research.

How do you write a literature review?

To write a literature review: (1) define your research question and scope; (2) search systematically across academic databases; (3) apply inclusion/exclusion criteria to select sources; (4) read critically with a focus on themes, debates, and methodological limitations; (5) organise by theme; (6) write in full prose, synthesising sources within each thematic section; (7) conclude with a clear research gap statement.

What is the difference between a literature review and an annotated bibliography?

An annotated bibliography lists your sources with a brief summary or evaluation of each. A literature review synthesises those sources into a coherent narrative argument, grouping them by theme, comparing their findings, and drawing analytical conclusions about the state of the field. They are fundamentally different tasks.

How long should a literature review be?

For an undergraduate dissertation (8,000–10,000 words), approximately 1,500–2,500 words. For a Master’s dissertation (12,000–15,000 words), approximately 3,000–4,500 words. For a PhD thesis, one full chapter of 8,000–12,000 words. The University of Kent’s guidance states the review ‘may be no more than 2,000 words’ at undergraduate level and ‘perhaps 8–10,000 words’ at PhD level.

What is a systematic literature review?

A systematic literature review is a structured, protocol-driven review that follows pre-defined inclusion and exclusion criteria to identify all eligible studies on a specific research question. Unlike a narrative review, it must be transparent, reproducible, and typically follows the PRISMA reporting guidelines. It is most common in health sciences, medicine, psychology, and evidence-based policy research.

How do I structure a literature review?

The three main literature review structure approaches are: (1) thematic,  organise by topic/theme rather than by author or date (most common); (2) chronological, trace the development of the literature over time; (3) methodological, group sources by research method (qualitative, quantitative, mixed). Most UK dissertations use a thematic structure.

How do I start a literature review?

The opening paragraph of your literature review should: (1) introduce the topic and its significance; (2) specify the scope (time period, geography, discipline); and (3) preview the structure of the review. Do not start with ‘This review will look at…’, start with the intellectual landscape of the field.

How many sources do I need for a literature review?

Quality matters more than quantity. The University of Kent’s guidance suggests 8–10 significant sources for an 8,000-word dissertation and up to 20 for a 12–15,000-word piece. For a PhD, 80–150+ peer-reviewed sources is typical. Sources should be predominantly peer-reviewed journal articles.

What is the difference between a narrative and a systematic literature review?

A narrative (traditional) literature review is flexible and interpretive, the researcher selects and synthesises relevant sources to address a broad question. A systematic literature review follows a strict pre-defined protocol with explicit inclusion/exclusion criteria to identify all eligible studies on a specific question. Sourcely’s review comparison guide notes that ‘systematic reviews are perfect for structured, focused inquiries, while narrative reviews work well for generating ideas or providing context in less-defined areas.’

Can I get help writing my literature review?

Yes. Assignment Helper UK provides specialist dissertation help and thesis writing support that includes the literature review chapter. Our writers are subject-qualified and experienced in both narrative and systematic literature reviews at undergraduate, Master’s, and doctoral level.

Should my literature review be in past or present tense?

For describing what researchers found in a study, use past tense: ‘Smith (2021) found that…’ For discussing theories, established knowledge, or claims that remain current, use present tense: ‘The theory of planned behaviour suggests…’ Be consistent within each approach.

What databases should I use for my literature review?

The most commonly recommended databases at UK universities are: JSTOR (humanities and social sciences), Web of Science and Scopus (cross-disciplinary), PubMed and MEDLINE (health and life sciences), EBSCOhost / Academic Search Complete (broad coverage), ProQuest (dissertations and grey literature), and Google Scholar as a supplement.

Do I need to proofread my literature review before submission?

Absolutely. Typographical errors, inconsistent referencing, and unclear sentences can undermine even strong analytical content. Our proofreading service provides a specialist academic review that goes beyond spell-checking,  covering argument flow, citation accuracy, structural coherence, and academic register.

Writing a Literature Review That Actually Earns the Marks

A strong literature review is not the product of reading more sources. It is the product of reading critically, organising thematically, synthesising analytically, and writing with the explicit purpose of making an argument about the state of knowledge in your field.

The literature review examples in this guide show that the difference between descriptive and analytical writing is not about length or the number of sources, it is about what you do with what you have read. Sources should serve your argument, not fill space. Every paragraph should advance a point. Every section should build toward the gap your study will address.

If you are working on a dissertation literature review, a standalone systematic review, or any extended academic piece that requires a rigorous engagement with the literature, and you need expert support, whether for the full chapter, structural feedback, or proofreading before submission, Assignment Helper UK’s team of subject-qualified UK writers is here to help.

Conducting a systematic literature review as part of your thesis? At Assignment Helper UK we provide specialist support for systematic reviews at Master’s and doctoral level, including PRISMA flow diagram guidance and quality appraisal.