As the highest degree level achievable, completing a PhD allows you to make an original contribution to your research field while developing advanced analytical and research skills
PhD study at a glance
- Typically takes three to four years full time.
- Usually requires a 2:1 undergraduate degree and often a Masters.
- Assessed by a written thesis and an oral exam (viva voce).
- Funded through university scholarships or UK Research and Innovation (UKRI) funding.
- Can lead to academic roles, research positions and a wide range of non-academic opportunities.
What is a PhD?
A PhD is the highest level of academic study, requiring you to carry out original research that expands understanding in your chosen field.
The term 'PhD' stands for 'Doctor of Philosophy', which comes from the Latin 'philosophiae doctor'.
Why do a PhD?
- Access careers that require advanced research expertise.
- Contribute original research to your field.
- Explore a subject you're genuinely interested in.
- Gain transferable skills such as analysis, communication and project management.
Is a PhD right for you?
- Best for independent researchers and subject specialists.
- Requires strong motivation and self-discipline.
- Leads to academic, research and specialist careers in industry and the public sector.
Be aware that PhD study can be independent and occasionally isolating, so building a support network with peers and supervisors is important.
What does a PhD involve?
A PhD is primarily an independent research project with minimal taught content compared to other postgraduate degrees.
It typically involves students conducting independent, original, and significant research in a specific field or subject before producing a publication-worthy thesis.
While some Doctorates include taught components, PhD students are almost always assessed on the quality and originality of the argument presented in their independent research project.
For instance, many universities, including the University of Leeds and the University of Edinburgh, structure PhDs around regular supervision and annual progress reviews.
A standard three-year PhD by thesis is typically split into three stages:
- First year - you'll meet with your PhD supervisor to discuss your research proposal and agree on an action plan with deadlines. You'll then complete your literature review, in which you'll evaluate and critique existing works to inform the direction of your project and ensure that your research will be original.
- Second year - your focus will shift to gathering results and developing your thesis, and you may begin writing its chapters. You may also present your results and ideas at academic conferences, gain teaching experience, collaborate with other students on similar projects, communicate the benefits of your research to the general public through workshops, lectures and presentations, or submit work for publication in an academic journal or book.
- Third year - primarily involves writing your thesis, though your research may still be in progress. After your supervisor gives their approval, you'll submit your thesis before undertaking a one-to-three-hour viva voce in which you'll discuss and defend your thesis in the presence of at least one internal and external examiner.
Therefore, a PhD requires strong time management. Many students treat it like a full-time job, balancing research with teaching, writing and other academic responsibilities.
What other types of Doctorates are there?
- Higher Doctorate - these are usually granted on the recommendation of a committee of internal and external examiners, which assesses a portfolio of published, peer-reviewed research you've undertaken over the course of many years. This type of Doctorate is usually for those with several years of academic experience. Common award titles include the Doctor of Civil Law (DCL), Doctor of Divinity (DD), Doctor of Literature/Letters (DLit/DLitt/LitD/LittD), Doctor of Music (DMus/MusD), Doctor of Science (DS/SD/DSc/ScD) and Doctor of Law (LLD).
- Integrated/New Route PhD - this four-year pathway, often known as a '1+3' programme, combines a taught Masters year, typically an MRes or MSc, with a three-year PhD. It provides structured research training before you begin your Doctoral project, helping you develop key methodologies and skills as you move into independent research. Integrated PhDs are offered at a range of UK universities, particularly through UK Research and Innovation (UKRI)-funded programmes such as Doctoral Training Partnerships (DTPs).
- Professional Doctorate - Geared toward students of vocational subjects such as medicine, education, and engineering, professional Doctorates focus on teaching and typically involve smaller research projects and a thesis component. They're often favoured by those aiming for a career outside of academia and are usually supported by employers.
Read more about the different PhD pathways at 5 routes to getting a Doctorate.
What are the most popular PhD subjects?
PhDs are offered across a range of disciplines, but some subject areas consistently attract high levels of interest due to strong funding availability and career demand:
- Arts and humanities - philosophy, law and creative writing, focusing on critical thinking and cultural analysis.
- Healthcare - clinical psychology and biomedical sciences, often tied to professional careers.
- Science, technology, engineering and maths (STEM) - computer science, engineering and life sciences, linked to industry funding and research innovation.
- Social sciences - economics, education and psychology, which explore societal challenges and policy.
The popularity of a subject can depend on:
- funding opportunities
- global research priorities
- job prospects.
How long does a Doctorate take?
Full-time PhDs usually last for three or four years, while part-time PhDs can take up to six or seven. However, the thesis deadline can be extended by up to four years at the institution's discretion. Many students on three-year PhD programmes finish their theses in the fourth year.
While most PhD studentships begin in September or October, both funded and self-funded PhDs can be undertaken at any time of year.
Do I need a Masters to do a PhD?
No, a Masters degree isn't always essential. While many universities prefer candidates to have a Masters, some will accept applicants with a strong undergraduate degree (typically a 2:1 or above), particularly for funded projects or structured PhD programmes.
In some cases, you may begin on a Master of Philosophy (MPhil) or Master of Research (MRes) before transferring onto a PhD, depending on your progress.
If you need an MPhil or MRes before enrolling on your PhD, search Masters degrees.
How much does a PhD cost?
Tuition fees vary, but usually fall between £4,000 and £7,000 per year for UK students and those from the European Union (EU) with settled status. UK Research Councils pay universities £5,238 per year (from 2026/27) for each funded PhD student, which gives a good indication of the average figure.
For EU students looking to pursue a Doctorate in 2026/27, you'll need to have gained settled or pre-settled status to be eligible for student finance - see PhD loans.
Non-EU students may pay considerably more for their tuition fees.
Despite this, funding is provided by organisations such as UKRI and university-specific scholarships. Explore your options for your part and fully funded research through Research Council grants.
In addition, PhD studentships and assistantships that combine research and teaching are also common, with scientific studentships usually paid at a higher rate.
Read more about funding postgraduate study.
How do I apply for a PhD?
Applying for a PhD typically involves the following steps:
- Identify a research topic - choose an area that matches your academic background and interests.
- Find a supervisor or project - search for advertised projects or contact academics working in your field.
- Prepare your application - you'll usually need an academic CV, a research proposal, a personal statement, two or three academic references, and your transcripts.
- Submit your application - this may be directly to a university or alongside a funding application.
For example, institutions such as The University of Manchester and University College London (UCL) provide detailed guidance on application requirements and timelines.
Example PhD application timeline
| Timeframe | What to do |
|---|---|
| 12 to 18 months | Explore research ideas and possible subjects |
| 10 to 12 months | Research universities and potential supervisors |
| 8 to 10 months | Contact academics and start your proposal |
| 6 to 8 months | Submit applications and apply for funding |
| 3 to 6 months | Attend interviews and accept offers |
| 1 to 3 months | Arrange funding, accommodation and admin |
| Start date | Begin your PhD and agree on a research plan |
Starting early gives you more time to refine your ideas and improve your chances of securing funding.
What about the application requirements for international students?
International students may need proof of English language ability.
If you don't yet have settled UK status and are looking to study certain courses in the following areas, you must comply with the Academic Technology Approval Scheme (ATAS):
- engineering
- mathematics
- materials science
- medicine.
This involves undergoing a security clearance process with the Foreign, Commonwealth & Development Office (FCDO).
Can I study for a PhD abroad?
As the aim of Doctoral research is to stretch the boundaries of understanding within your chosen field, you may find that the best place to begin your research lies overseas.
According to the Higher Education Student Statistics: UK, 2024/25, 121,175 postgraduate research students are based in the UK, of whom around 48,000 are international PhD candidates.
While studying in the UK has proved a strong draw for foreign PhD students, a number of other countries have also emerged as research-oriented nations.
The following 15 countries all feature within the top 100 of the QS World University Rankings 2026:
- Australia
- Belgium
- Canada
- China
- France
- Germany
- Ireland
- Japan
- Malaysia
- Netherlands
- New Zealand
- Singapore
- Sweden
- Switzerland
- USA.
If you're interested in studying for a PhD abroad, explore our country profiles.
What can I do after my PhD?
Your ability to critically analyse, demonstrate intellectual maturity, and conduct independent, honest research is highly valued in academia and the workplace.
Many students who undertake a PhD move into academia or industry research, often progressing through postdoctoral roles, fellowships or lectureships.
Other career options will depend on your field of study. For instance, according to HESA's Graduate Outcomes 2022/23 survey (2025), a significant number of PhD graduates went on to work as:
- higher education teaching professionals
- clinical psychologists
- natural and social science professionals
- biochemists and biomedical scientists.
Consider what else a PhD degree can lead to.