If you are thinking about postgraduate research study in the UK, you may be weighing up two options: an MRes (Master of Research) or a PhD (Doctor of Philosophy). Both involve research, but they are quite different in their purpose, length, and what they lead to.
This guide explains both degrees clearly, compares them side by side, and helps you think through which one might be the right fit for your goals. Everything here is based on information from UK universities and official guidance.
1. What Is an MRes?
An MRes, or Master of Research, is a postgraduate degree that focuses primarily on research rather than taught classes. Most MRes programmes in the UK last one year full-time, or two years part-time. Some specialist programmes, particularly in arts subjects, may run for two years full-time. Always check the duration of the specific programme you are applying to. You will typically complete a combination of research training modules and a substantial independent research project or dissertation.
The MRes is recognised as a postgraduate research degree in the UK. It sits above a standard taught master's degree (such as an MSc or MA) in terms of its research depth, but below a PhD in terms of its length and the originality expected.
According to the Quality Assurance Agency (QAA), research master's degrees such as the MRes require students to produce original work as part of their programme. This is what distinguishes them from purely taught degrees.
What does an MRes involve?
- A substantial research project or dissertation, which forms the largest part of the degree
- Research methods training, which helps you develop the skills you need to carry out your project effectively
- Some taught elements, which vary by university and subject area
- Regular meetings with a supervisor who guides and supports your research
Who is the MRes for?
The MRes is a good choice if you want to develop serious research skills but are not yet ready to commit to a full PhD. It is also a strong pathway into a PhD, as it gives you a taste of what doctoral research involves while producing a recognised standalone qualification. Many students use the MRes to identify a specific research question they then take into a PhD programme.
It is also a valuable qualification in its own right. Private sector organisations, government departments, and research-intensive industries value candidates with strong analytical and research skills, even without a full doctorate.
2. What Is a PhD?
A PhD, or Doctor of Philosophy, is the highest academic qualification you can earn. In the UK, a PhD typically takes three to four years full-time. During this time, you design and carry out an original research project that makes a new contribution to knowledge in your field.
At the end of your PhD, you submit a thesis and defend it in a viva voce examination (commonly called the viva), where examiners question you in depth about your research. According to guidance from the University of Birmingham and other institutions, the viva is compulsory for doctoral degrees in the UK. If you pass, you are awarded the degree of Doctor. For MRes students, a viva may be held at the discretion of the examiners rather than as a requirement, though this varies by university.
What does a PhD involve?
- An original, independent research project designed and carried out by you
- Close working relationship with one or more academic supervisors throughout your studies
- A thesis of typically a substantial number of words (typically in the range of 70,000 to 100,000, though this varies by university and subject)
- A viva voce examination at the end of the programme
- The opportunity to publish your research and contribute to your academic field
Who is the PhD for?
A PhD is the right choice if you have a clear research question you want to pursue, a strong academic background, and a genuine commitment to making an original contribution to your subject area. Many PhD graduates go on to careers in academia, research, policy, or specialist roles in industry. It is also the qualification required if you want to teach at university level or apply for research fellowships.
3. MRes vs PhD: A Quick Comparison
Here is a side-by-side overview to help you see the key differences at a glance.
|
|
MRes |
PhD |
|
Typical duration |
1 year full-time (most programmes). 2 years part-time. Some specialist programmes may be 2 years full-time. Check the specific programme. |
3 to 4 years (full-time) |
|
Type of work |
Research project plus some taught training modules |
Entirely independent original research |
|
Output |
Dissertation (shorter than a PhD thesis) |
Thesis of 70,000 to 100,000 words, plus viva examination |
|
Academic level |
Master's level (postgraduate research degree) |
Doctoral level (highest academic qualification) |
|
Supervisor required |
Usually yes. Varies by programme. Some universities allocate a supervisor after you join; others require contact before you apply. |
Yes. You must identify a potential supervisor before applying in almost all cases. |
|
Research proposal at application |
Required by some universities, not all. Check each programme individually. |
Almost always required as part of the application. |
|
Entry requirement (typical) |
A good bachelor's degree (usually 2:1 or above) |
A master's degree (merit or distinction) or strong bachelor's degree with research experience |
|
Can bring dependants to the UK? |
Depends on the university. The programme must be classified as research-based by UKVI. Check with your university. |
Yes, if your programme meets the research degree criteria. |
|
Graduate Route visa after completing |
18 months |
3 years |
|
ATAS certificate may be required |
Yes, for certain subjects in science, engineering and technology |
Yes, for certain subjects in science, engineering and technology |
The information in this table is a general guide. Requirements and policies vary between universities. Always check the specific requirements of the programme you are applying to.
4. The Supervisor Question
One of the most important practical differences between an MRes and a PhD is how the supervisor relationship works at the application stage.
For a PhD
In almost all UK universities, you need to identify a potential supervisor before you apply. This means researching the academic staff in your chosen department, finding someone whose research interests align with yours, and making contact before submitting a formal application. Most universities also ask you to submit a research proposal as part of your application, which your potential supervisor will typically review.
This step can feel unfamiliar if you have only ever applied to taught courses before. It requires you to research academic departments carefully and to be clear about what you want to study and why.
For an MRes
The supervisor picture for an MRes is less straightforward and varies significantly between universities and programmes:
- Some universities require you to identify and make contact with a supervisor before applying, in the same way as a PhD
- Some universities allocate a supervisor to you after you have been admitted and joined the programme
- Some MRes programmes are structured as an integrated MRes plus PhD pathway, where the supervisor relationship develops during the first year
Because of this variation, you need to check the specific requirements of each MRes programme you are interested in. The programme page on the university's website will usually make this clear. If it does not, contact the admissions team directly before applying.
At Atava, we charge a service fee for MRes and PhD applications because finding the right supervisor requires research into academic staff and their current work, and correspondence with departments on your behalf. This takes significant time and expertise. If you would like help with this, get in touch with our team.
5. Entry Requirements
The entry requirements for MRes and PhD programmes vary between universities and subjects, but here is a general guide to what is typically expected.
MRes entry requirements
- A bachelor's degree, usually at 2:1 level or above (or an equivalent international qualification)
- In some subjects, relevant work or research experience may be considered alongside or instead of academic qualifications
- English language proficiency, typically IELTS 6.5 or above with no component below 6.0, though this varies by university and subject
PhD entry requirements
- A master's degree (usually at merit or distinction level) in a relevant subject, or a first-class or upper second-class bachelor's degree with strong research experience
- A research proposal, which outlines your intended research question, methodology, and contribution to the field
- An agreed supervisor at the university
- Strong academic references
- English language proficiency, typically IELTS 7.0 or above for most research programmes, though requirements vary
These are general guidelines. Always check the specific entry requirements on the university's programme page, as they differ between institutions and subjects. For international qualifications, most universities provide a country-by-country guide to accepted qualifications on their admissions pages.
6. Bringing Your Family to the UK
If you plan to bring your spouse, partner, or children with you while you study in the UK, the type of degree you are studying is one of the factors that determines whether you are eligible to do so.
According to gov.uk, under current rules, you can bring dependants to the UK on a student visa only if you are studying a PhD or other doctoral qualification, or a research-based higher degree. The course must qualify as research-based under UKVI's definition, which is that the research component must be larger than any taught component when measured by student effort.
What this means for PhD students
PhD students are generally eligible to bring dependents, as a PhD is a full research degree. You should always confirm this with your university's international student team before applying, and check the latest position on gov.uk.
What this means for MRes students
The eligibility for MRes students varies and depends on how the university classifies the programme. Some MRes programmes include enough taught content that UKVI does not classify them as research-based, which means dependants would not be eligible.
As the University of Bath confirms on their MRes page, MRes students there are not eligible to bring dependants because their MRes courses include taught material and do not meet the full-time research-based criteria. Other universities classify their MRes differently.
This means you must check directly with the international student or immigration team at the specific university you are applying to. Do not assume eligibility based on the general degree title alone.
If bringing your family to the UK is important to your plans, this is one of the most critical things to clarify before you apply. Always check with your chosen university and verify the current rules on gov.uk
7. ATAS Certificate
Some MRes and PhD students in the UK need to obtain an Academic Technology Approval Scheme (ATAS) certificate before they can apply for their student visa. ATAS is a UK government requirement managed by the Foreign, Commonwealth and Development Office (FCDO).
According to gov.uk, ATAS applies to international students studying certain sensitive subjects at master's or PhD level, including specific areas of science, engineering, and technology. If your subject requires an ATAS certificate, your university will include an ATAS statement in your offer letter with the code you need to complete the application.
ATAS applications are free and made online. Processing takes approximately six weeks. You should apply as soon as you receive your offer letter, and not wait until you are ready to apply for your visa.
Some nationalities are exempt from the ATAS requirement. You can check whether your subject and nationality require an ATAS certificate using the ATAS checker on gov.uk.
8. The Graduate Route Visa After You Finish
After completing your studies in the UK, both MRes and PhD graduates can apply for the Graduate Route visa, which allows you to stay and work in the UK without needing a job offer.
The length of the Graduate Route depends on what you studied:
- MRes graduates: the MRes is treated as a master's level qualification for Graduate Route purposes, not as a doctoral degree. This means up to 2 years if you apply for the Graduate visa before 1 January 2027, or 18 months if you apply on or after that date
- PhD graduates: 3 years, regardless of when you apply
The key rule to remember is that what matters is the date you apply for the Graduate visa, not the date you start or finish your course. You can read more about this in our post-study work visa guide.
9. Which One Is Right for You?
There is no single right answer. The best choice depends on where you are in your academic journey, what you want to achieve, and how certain you are about your research direction.
An MRes may be the right choice if
- You are interested in research but want to try it before committing to three or four years of doctoral study
- You do not yet have a specific research question in mind but want to develop one
- You want a standalone postgraduate research qualification that prepares you for either a PhD or a research-focused career
- Your bachelor's degree does not meet the typical entry requirements for a PhD, and the MRes will strengthen your profile
A PhD may be the right choice if
- You have a clear research question and a strong idea of what you want to investigate
- You want to pursue a career in academia, as a university lecturer or researcher
- You have already completed a master's degree and are ready for the next stage
- You have identified a supervisor whose research interests align with yours
- You want the full doctoral qualification, which opens doors that an MRes does not, including postdoctoral positions and academic lectureships
If you are not sure
That is completely understandable. This is a significant decision and it is worth taking time to speak to people with direct experience. Talking to academics in your field, to current MRes or PhD students, and to someone who knows the UK university system well can all help you make a more confident choice.
10. How Atava Can Help
At Atava Education and Training, we have been supporting international students with research degree applications since 2013. We are accredited by the British Council, English UK, and IALC.
For MRes and PhD applications, we provide a dedicated service that includes:
- Helping you identify universities and departments that are the right academic fit for your research interests
- Researching academic staff and identifying potential supervisors whose current work aligns with yours
- Supporting you in making initial contact with potential supervisors
- Guidance on writing your research proposal
- Checking your application documents before submission
Because finding the right supervisor requires significant research and correspondence, we charge a service fee for MRes and PhD applications. We will always be transparent about this before any work begins. If you would like to know more, get in touch with our team and we will give you a clear, honest answer about what support is available and what it involves.
Frequently Asked Questions
Can I go straight from an MRes to a PhD?
Yes, in most cases. An MRes is widely recognised as good preparation for a PhD. Many universities accept MRes graduates directly into PhD programmes. Having completed an MRes also demonstrates that you have experience of sustained independent research, which strengthens your PhD application.
Do I need a master's degree to apply for a PhD?
Usually, but not always. Most UK universities require a master's degree (at merit or distinction level) for PhD entry, especially in arts, humanities, and social sciences. In some STEM subjects, a very strong bachelor's degree with research experience may be sufficient. Check the specific requirements of each programme you are interested in.
Can I bring my family to the UK on an MRes?
It depends on how the university classifies the MRes programme. If the research component is larger than the taught component as measured by student effort, UKVI may classify it as a research-based higher degree and allow dependants. If the programme includes significant taught content, dependants may not be eligible. You must check directly with your university's immigration team and verify the current rules on gov.uk.
How long does it take to find a PhD supervisor?
This varies considerably. Some students identify a supervisor within a few weeks of beginning their search. Others take several months. The process involves researching academic staff, reading their published work, making contact by email, and sometimes attending an informal meeting or interview before a supervisor agrees to take on a new student. Starting this process early, ideally six to twelve months before your intended start date, is strongly recommended.
What is the difference between an MRes and an MPhil?
Both are postgraduate research degrees, but they are structured differently. An MRes typically includes structured research training modules alongside a research project, making it suitable for students who are newer to formal research. An MPhil (Master of Philosophy) is usually almost entirely research-based with little or no taught content, and is more commonly used as a direct pathway into a PhD or as a qualification awarded when a PhD student does not complete the full doctorate. The MRes and MPhil are often used interchangeably in some universities and subjects, so it is worth checking the specific structure of any programme you are considering.
Do I need an ATAS certificate for an MRes or a PhD?
It depends on your subject and your nationality. ATAS is required for certain subjects in science, engineering, and technology at master's and PhD level. Your university will confirm whether your programme requires an ATAS certificate in your offer letter. You can also check using the ATAS checker on gov.uk. Applications are free and take approximately six weeks to process.
Ready to Find Out More?
Whether you are still deciding between an MRes and a PhD, or you are ready to start looking for the right programme and supervisor, we are here to help.
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Sources: gov.uk Student visa: family members | gov.uk ATAS | gov.uk Graduate Route visa | QAA UK Quality Code | University of Bath MRes | UKCISA