Bachelor Thesis: Guide, Structure incl. Example

Final year has started, and a module handbook names the submission date for the biggest piece of work in your degree. Most questions about it are answered in your assessment regulations, which hardly anyone reads before the clock is already running.

A bachelor’s thesis, called a dissertation or final-year project at most UK universities, is the independent piece of research that completes an honours degree and shows you can work through a question in your subject using recognised methods within a fixed deadline, with the length set by your university. By the end you will have a plan that still holds if a deadline slips or a first attempt goes wrong.

📌 Key points at a glance

• In the UK, the bachelor’s thesis is usually called a dissertation.
• Length is set in words by your university, not nationally.
• Extensions need a formal request, ideally before the deadline.
• A failed dissertation usually gets one more attempt, often capped.
• Assessment regulations beat any general advice online.

What is a bachelor’s thesis in the UK, and what is expected of you?

A bachelor’s thesis in the UK is an extended piece of independent research, normally called a dissertation or final-year project, in which you show at the end of an honours degree that you can investigate a question from your subject with sound methods and present the result as a clear argument. Formally it is a module like any other, just the largest one you will take.

No national law prescribes what a dissertation must contain. The Frameworks for Higher Education Qualifications, published by the Quality Assurance Agency in 2024, describe what a graduate at Level 6, the level of a bachelor’s degree with honours, should be able to do. Among other things, that includes the ability “to initiate and carry out projects” and “to devise and sustain arguments”. The frameworks set outcomes, not formats, so everything else, from the word limit to the font size, comes from your university and your department.

Scotland runs a parallel framework. A Scottish honours degree sits at SCQF level 10 and typically takes four years of full-time study rather than three, so the dissertation usually belongs to the fourth year. The expectations are much the same, but regulations, grading scales and even the vocabulary can differ from England, Wales and Northern Ireland.

What a bachelor’s dissertation is expected to deliver

Markers expect a small, self-contained contribution showing that you have mastered the way your discipline works. That means a question you can actually answer in the time available, a method that fits that question and an argument other people can follow from start to finish. Whether you analyse existing literature or collect your own data depends on your subject and your supervisor, and both routes can earn a first.

What a bachelor’s dissertation does not have to deliver

An undergraduate dissertation does not have to fill a gap in the research or produce findings an organisation could put to work tomorrow. An original contribution to knowledge is the test for a doctoral thesis, not for a bachelor’s degree. The step up to a master’s dissertation lies in independence rather than length: at bachelor’s level you show that you apply your field’s methods correctly, at master’s level you choose them yourself and argue for their limits. Naming the weaknesses of your own study openly does not cost marks. More often it earns them.

Why “thesis” and “dissertation” swap places between universities, and why no national word count exists, is explained in our article on what a thesis means in UK usage.

Empirical or theoretical dissertation: which one fits your question?

The research question decides the type of dissertation, not your taste. A question about frequencies, relationships or attitudes needs data, while a question about concepts, theories or interpretations needs careful work with the literature. Students who pick the method first and then hunt for a question to match have the order back to front, and they usually only notice when the analysis refuses to answer anything.

In many programmes the department settles the type anyway. If the choice is yours, look at the conditions before you look at the appeal. Collecting your own data needs access to participants, time for responses to come in and an analysis method you can actually handle. A theoretical dissertation needs good access to academic literature and the patience to work through positions that contradict each other.

What collecting your own data adds to the workload

Collecting your own data brings steps that never appear in the timetable of a theoretical dissertation. Before the first questionnaire goes out, UK universities generally expect ethics approval from a departmental or faculty research ethics committee for projects involving human participants. On top of that come a pilot test with a handful of people, a clear privacy notice under the UK GDPR, a plan for anonymising the responses and, if you recruit through a school, charity or employer, that organisation’s permission. Run the pilot on the exact version you will send out: set it up in a free survey maker, share the link with a few test respondents and fix whatever confuses them before fieldwork starts. Allow several weeks of fieldwork as well, because responses never all arrive on day one. The exact requirements depend on your subject and your university, so raise them with your supervisor at your first meeting.

The trade-off between both routes is set out in detail in our article on empirical or theoretical dissertations, while the guide to the empirical dissertation walks through structure, appendices and ethics for a study of your own.

Structure of a bachelor’s dissertation: the order of the sections

A bachelor’s dissertation follows a fixed order: title page, abstract, contents, introduction, literature review, methodology, results, discussion, conclusion, references and appendices, with a signed declaration somewhere along the way. Most UK departments use this sequence because it mirrors how a reader works through research: first what the study is about, then how it was done, then what it found and what that means.

Only a few elements move around between universities. The declaration of originality sits directly behind the title page in some handbooks and on the very last page in others, and acknowledgements are usually optional. Lists of figures, tables and abbreviations normally follow the contents page. Your department decides all of this, and the dissertation handbook for your module is where you will find it.

The sections of a bachelor’s dissertation in the usual order

1. Title page. Title, degree programme, supervisor, year of submission and your candidate number, since many universities mark anonymously.
2. Abstract. Question, method, main findings and conclusion, usually on a single page.
3. Contents and lists. Headings with page numbers, plus figures, tables and abbreviations where you have them.
4. Introduction. Problem, research question, aims and a short outline of the chapters.
5. Literature review. State of research and the concepts your question builds on.
6. Methodology. Design, sample, instrument, procedure and the reason behind each choice.
7. Results and discussion. Findings first, interpretation and limitations afterwards.
8. Conclusion. Answer to the research question, limitations of the study, outlook.
9. References. Every source cited, in the referencing style your department requires.
10. Appendices and declaration. Questionnaire, transcripts, ethics approval letter and the signed declaration.

Word limit: what counts and what does not

UK dissertations are measured in words, not pages, and the limit comes from your module handbook. At UCL the assessment regulations require every word count to state whether footnotes, bibliographies, appendices, tables and figures are included, and a penalty for going over or under may not exceed 10 percentage points or take the mark below the pass mark. Other universities set different rules, so check both the limit and the list of exclusions before you write your first chapter.

Sample outline for an empirical bachelor’s dissertation

An outline only becomes useful once the chapter headings say something about the content. “Theory” and “Analysis” say nothing, “Cultivation theory” and “Testing the hypotheses” do. A dissertation on how news consumption relates to mood makes a good example, because the logic of an empirical outline is easy to see in it.

1. Introduction: research interest and research question
2. Literature review: cultivation theory and the videomalaise hypothesis
3. Research design: hypotheses, sample and questionnaire
4. Conducting the online survey
5. Results: descriptive statistics and hypothesis tests
6. Discussion and limitations of the study
7. Conclusion

Every heading in an outline needs text beneath it, and two headings never follow each other directly. Anyone who creates a section 2.1 also needs a 2.2. Which patterns suit the main part, and how to choose between a chronological, systematic and comparative structure, is covered in our guide to dissertation structure.

Dissertation timetable: the four phases

A dissertation timetable divides the time you have into four phases: finding a topic, planning the design, researching and drafting, and revising. The most common planning mistake is not laziness but a wrong sense of how long each step takes. Reading for the literature review quietly expands, while proofreading and formatting get badly underestimated.

How much time you have depends on how your university sets up the module, and there is no national figure. One useful yardstick comes from the credit system. According to the QAA frameworks, one credit stands for 10 notional hours of learning, so a 30-credit dissertation assumes around 300 hours of work and a 40-credit dissertation around 400. At many universities the module stretches over two terms or the whole final year, and your module handbook gives the binding dates.

Phase 1: Find a topic and agree it with your supervisor

In the first phase you check whether your topic will hold up. That involves a first look at the literature, a conversation with your supervisor and an honest feasibility check: can you reach the data, is there enough literature, and can the question be answered in the time you have? Many departments ask for a short dissertation proposal at this point. A structured way to develop and narrow down an idea is set out in our article on finding a dissertation topic.

Phase 2: Plan the design and apply for ethics approval

The second phase produces the framework of your study. You narrow down the literature, fix the research question and decide on the type of dissertation. For an empirical project this is where hypotheses, the questionnaire or interview guide and the sampling plan come in, together with the ethics application, which has to be approved before you contact a single participant. How a question turns into assumptions you can test is the subject of our guide on how to write a hypothesis.

Phase 3: Collect data and write the first draft

The third phase is the longest: writing the literature review, running the study, analysing the data and completing a full first draft. What matters most is writing alongside the research instead of starting once the analysis is finished. Students who put off the writing lose exactly the weeks they later need to discuss their results. At this stage an unfinished draft is worth more than one polished chapter, because your supervisor can only comment on what exists.

Phase 4: Revise, proofread and submit

In the final phase you no longer research, you revise: check the argument, align references and formatting, update the contents page, have the text proofread and prepare the submission file. Plan this phase generously and do not submit on the last day, because upload portals and printers have a habit of failing exactly then. What a proofreader may change, and where the line to unauthorised help runs, is explained in our article on proofreading your dissertation.

A step-by-step plan with a task list for each phase is in our guide to writing your bachelor’s dissertation step by step.

Three rules from your assessment regulations that most guides leave out

Besides the submission date, UK assessment regulations contain three rules that matter as soon as something goes wrong: how to get an extension, what happens if you submit late and what happens if the dissertation fails. They rarely appear in general guides, even though they decide whether a bad month stays a bad month or turns into a weaker degree.

For this article we read the current rules of three universities: the UCL Academic Manual for 2026-27, the assessment regulations of the University of Glasgow for 2026-27 and the late submission rules of the University of Hertfordshire. All three agree on the principles and differ clearly in the detail. What counts is always the version in force at your own university.

Rule 1: An extension needs a formal request

An extension for a dissertation comes through your university’s extenuating circumstances process, not through a friendly email to your supervisor. Extenuating circumstances are events outside your control, such as illness, that stop you from meeting the deadline. At UCL an accepted claim can lead to an extension, and if the deadline has already passed, the late penalties may be suspended instead. UCL also runs a Delayed Assessment scheme whose standard mitigation for coursework and dissertations is an extension of five working days.

Glasgow works with a similar tool. A student who cannot meet a deadline, or expects not to, can apply for an extension with a Delayed Assessment Permit, and the request should be made before the published deadline. If the circumstances call for a longer delay, a separate extenuating circumstances claim follows. Students with a disability or long-term condition can have adjustments agreed in advance, and at UCL the standard Reasonable Academic Adjustment extension for a dissertation is two weeks.

Rule 2: Late submission costs marks quickly

Handing in late without an accepted claim triggers a fixed penalty scale, and at all three universities a delay of more than five days costs almost the entire mark. The scales themselves differ more than most students expect.

As of October 2026, undergraduate rules; the current version at each university applies.

Two details decide how much damage a late upload really does. At UCL and Hertfordshire the penalty never pushes a passing mark below 40, so a strong dissertation handed in a day late can still pass comfortably. Glasgow adds a rule for honours programmes that set a minimum grade for a piece of independent work: the late penalty is ignored when checking whether that minimum has been reached.

Rule 3: A failed dissertation usually gets one more attempt

A failed dissertation can normally be reassessed once, and the second attempt comes with strings attached. At UCL the standard route is a resit without additional teaching, and a passed resit is capped at the pass mark of 40. If the Board of Examiners judges that the failure needs further supervision to put right, it can require a repeat of the dissertation with tuition and fees instead. Failing the second attempt means leaving the programme, although an alternative or interim qualification may still be possible.

Glasgow also allows one further attempt, normally within the same academic session, with the course grade capped at D, the threshold grade for undergraduate programmes. The University of Glasgow then goes a step further: only first-attempt grades count towards the classification of the degree, so a resit earns the credit but cannot lift your class. UCL, by contrast, uses the capped resit mark in the classification. Either way, a failed first attempt leaves a lasting mark on your final result.

All three rules sit in the same places in most sets of regulations: the sections on deadlines, on extenuating circumstances and on reassessment or the consequences of failure. Look them up once and note where they are. If your university’s internal procedures end in a decision you believe is wrong, students in England and Wales can take a complaint to the Office of the Independent Adjudicator for Higher Education. No article replaces advice from your registry or your students’ union advice centre.

How a bachelor’s dissertation is marked and how much it counts

A bachelor’s dissertation is normally marked by two academics, with an external examiner overseeing the standards, and then counts towards your degree classification with a fixed weight. How heavy that weight is follows from the credit value of the module and from your university’s classification scheme, not from a national percentage.

UCL shows how this works in practice. Where the supervisor marks the dissertation, full, independent and anonymous second marking must follow, and any mark you hear before the Board of Examiners has met is only indicative. Under UCL’s standard classification Scheme A for a three-year bachelor’s degree, the best 90 credits of year one count once, the best 90 of year two three times and all 120 credits of the final year five times. A 30-credit dissertation in the final year therefore makes up about 14 per cent of the final weighted mark, a 40-credit dissertation about 19 per cent. At UCL a final weighted mark of 69.50 or more secures a first. Percentages quoted online without a named university and scheme behind them are rough guesses at best.

What your dissertation is marked on

Markers look at four things: the research question, the method, the argument and the use of sources. Presentation counts too, but as long as you follow the requirements it rarely moves a dissertation into a different class band. Padding the text to reach the word limit usually makes it worse, because repetition and side issues water down the argument. A shorter dissertation that answers its question beats a longer one that writes around it.

Where to find the real marking criteria

The concrete criteria are not in the university regulations but in the marking rubric or dissertation handbook of your department, and many departments publish exactly that. UCL’s regulations say marking criteria should be designed to help students understand what they are expected to achieve. Ask your supervisor for the rubric before you start writing. A grid with grade descriptors tells you more in five minutes about what earns a first or a 2:1 than any general guide.

A dissertation is marked on whether it answers its question. Everything else is the frame.

Common mistakes in a bachelor’s dissertation

Most lost marks do not come from missing knowledge but from decisions made early and noticed late. Four mistakes come up particularly often, and all four are still cheap to fix in the first weeks.

Not one of them is a question of effort. Each grows out of a decision taken at the start and never discussed again: how wide the question is, when fieldwork begins, how the method is justified and what the conclusion is for. Going through these four points once, explicitly, with your supervisor saves expensive corrections later on.

The research question is too broad

A question such as “What influence does social media have on young people?” cannot be answered in one academic year alongside your other modules. It forces you to stay on the surface, and markers notice that straight away. Narrow it down: which platform, which age group, which aspect, which period. A tight question looks modest in the proposal and still carries the dissertation all the way to the end.

Fieldwork starts too late

In an empirical dissertation, fieldwork is the one stage you cannot speed up. Responses take time, an ethics application may come back with requests for changes, and a sample that turns out too small cannot be repaired afterwards. Students who launch their survey only once the literature review is finished lose the weeks they later need for analysis and discussion. Start collecting data as early as your research design and your ethics approval allow.

The methodology describes instead of justifying

Many dissertations describe in detail what was done and never say why. The justification is exactly what gets marked: why this method and not another, why this sample, why these scales, and which limits come with each decision. A methodology chapter without reasons reads like a lab report and leaves markers guessing whether your choices were deliberate.

The conclusion repeats the chapters

A conclusion is not a summary of the dissertation but the answer to the research question. It is the place for the limitations of your study and a brief outlook, not for new sources or new topics. If your conclusion only turns the headings of the main chapters into sentences, you have wasted the chance to make your own achievement visible.

Conclusion

A bachelor’s dissertation is more predictable than it feels: the structure is set, the four phases are known and the mark depends on whether your work answers its question. What makes the difference is the preparation before you commit to a topic. Read your assessment regulations once from start to finish, note the rules on extensions, late submission and resits, and narrow your question until it fits the time you have.

Where to go next

• Still looking for a topic? Finding a topic for your dissertation
• Want the process step by step? Writing your bachelor’s dissertation: approach and checklist
• Collecting your own data? Running a survey for your dissertation
• Writing with a company? Writing your bachelor’s dissertation at a company

Need your own data for your bachelor’s dissertation?

With empirio.ai, an online survey tool from Germany with hosting in the EU, you create the questionnaire for your methodology chapter and export the responses straight into your analysis.

How to plan the survey for your dissertation