Doctoral · Oxford Computer Science
The Oxford DPhil in Computer Science is not a longer taught Master's. Oxford admits every student as a Probationer Research Student, judges the application on a research proposal or statement of research interests, and invites to interview only those for whom a supervisor is interested in their research. The decision for an applicant is therefore less whether the degree is good enough than whether you can name a research problem inside one of the department's ten themes and make the case that someone there would want to supervise it. This guide sets out what Oxford says for 2027-28 entry, marks Avandy's own judgment separately and ends with what to do before you write the statement.
Official information · last verified for 2027-28 entry
Taken from Oxford's DPhil in Computer Science course page (all sections expanded) and read on 1 November 2026. The page describes 2027-28 entry. For a 2028-29 start, applied for in 2027-28, every requirement below is last verified for the previous cycle and may change; Oxford's requirements, dates and funding for 2028-29 are awaiting publication, and none is stated here.
Oxford describes a research-based course in areas from algorithms and AI to quantum computing and security, full time in Oxford, normally three to four years. Every student is first admitted as a Probationer Research Student.
Oxford asks for a first-class or strong upper second-class four-year honours degree, or a three-year honours degree plus a Master's with merit or distinction, in a relevant subject. Oxford says a four-year sandwich degree with a year in industry is not an acceptable equivalent.
Oxford says no GRE or GMAT scores are sought. The application stands on the record, the references and the written statement.
Applicants submit a research proposal, or a statement of research interests if not yet ready for a full proposal. Both are assessed for coherence, originality and feasibility in around four years.
The application names at least one supervisor in the department. Oxford adds that it is not always possible to give a student the supervisor they prefer.
Candidates who meet the academic criteria are invited to interview only if a supervisor is interested in their research. Interviews last around 30 minutes and may be online.
Official sources
Read on 1 November 2026 on Oxford's DPhil in Computer Science course page (all sections expanded), which describes 2027-28 entry. Oxford's deadlines, fee and funding sections, the place and application figures, the Application Guide, the International Qualifications page and the department's own website were not used and are not stated. No deadline, fee, funding amount or place number is stated.
The decision
This guide concerns only the research degree. The comparison below is Avandy's judgment (heuristic), not Oxford's, and rests on what the page says about assessment.
you can already describe a problem, not just a field, and you want three to four full-time years in Oxford producing an original thesis. The page assesses originality and feasibility, which favour applicants who have started to scope a question.
your main aim is advanced training in the subject. Avandy's guide to the Oxford MSc in Advanced Computer Science covers the taught route. This guide did not read how Oxford relates the two, so do not assume one leads to the other.
A three-year degree needs a Master's with merit or distinction; a four-year honours degree can stand alone; a four-year sandwich degree with an industry year is not an acceptable equivalent. For degrees from outside the UK, Oxford points to its International Qualifications page, which this guide did not read.
How Oxford says it decides
Oxford says candidates are considered against the academic criteria and the proposal or statement, and that those who meet the criteria are invited to interview if a supervisor is interested in their research. The statement is assessed for coherence, originality, understanding of the proposed area, feasibility in around four years and preliminary knowledge of research techniques. Oxford says the proposal should focus on research ideas rather than personal achievements, and that a supervisor is helpful to identify.
After admission
Oxford admits students as Probationer Research Students, who normally apply to transfer to DPhil status by the fourth term. Confirmation of DPhil status follows within nine terms of admission, and students are expected to teach at least one set of undergraduate classes before confirmation. Oxford says both milestones normally involve an interview with two assessors other than the supervisor. The thesis should not exceed 250 pages after at most four years, and the degree ends with an oral examination before two examiners. This is the structure of the 2027-28 page and may change.
Avandy's judgment
These points are Avandy's heuristic reading of the page. They are not Oxford rules and carry no probability.
Oxford accepts a statement of research interests from an applicant not yet ready for a proposal, and does not hold them to it. That is permission to be flexible, not to be vague: the listed criteria still reward coherence and understanding of the area.
Oxford says supervision is allocated by the department and preferences cannot always be met. A statement that shows the problem sits across a theme, and a second named supervisor, avoids staking everything on one person.
Oxford says you can contact potential supervisors and that they are busy. Because interview turns on supervisor interest, a brief, specific note about a paper of theirs is more useful than a general enquiry. Do not expect a reply.
Oxford says the course may require an ATAS certificate before a visa application, and that the department confirms this after an offer. International applicants should plan for that step.
What to do next
Oxford's own page implies this order; the sequence is Avandy's suggestion.
Shortlist two members of staff in the department's themes whose recent papers you can describe accurately.
Write one paragraph on a specific problem and why it is tractable in around four years before you write anything else.
Test each paragraph against the criteria Oxford lists: coherence, originality, feasibility, research techniques.
Choose three referees, normally two academic, and prepare a one-to-two-page CV. Publications are not required.
Planning for 2028-29 entry
Oxford's course page describes entry in 2027-28. A start in 2028-29 means applying in the 2027-28 cycle, under rules Oxford has not yet published. Each item below is either last verified for 2027-28 entry, which means Oxford published it for the previous cycle and it may change, or awaiting publication for 2028-29 entry.
Probationer status, the milestones, the supervisor-interest gate to interview and the statement format are described on Oxford's page for 2027-28 entry. Oxford has not published the following cycle.
This guide states none of them. Oxford publishes them per cycle on the course page; read the page again when it shows 2028-29.
Shortlist two supervisors in the department's themes and draft the research statement against Oxford's listed criteria.
Support
Avandy provides independent academic and admissions support. It is not affiliated with the University of Oxford or any of its departments, and it has no relationship with any member of staff. Support sits within the Avandy Trinity Advisory Model: a Strategic Admissions Consultant and a PhD-level Academic Mentor help the applicant test a research idea against the department's published research areas and plan their own statement. Support here is limited to testing a research idea against the department's published themes and planning the applicant's own statement; it does not extend to contacting staff on the applicant's behalf. Avandy does not write or submit any part of an application, cannot arrange a supervisor and promises no outcome or funding.
Questions
Oxford accepts a first-class or strong upper second-class four-year honours degree in a relevant subject on its own. A three-year degree needs a Master's with merit or distinction. This is the 2027-28 wording.
Oxford asks you to name at least one supervisor in the department and says you can contact them, but it does not say agreement is required before applying. It does say interview follows only where a supervisor is interested in your research.
Oxford says no GRE or GMAT scores are sought for this course.
Oxford accepts a proposal, or a statement of research interests if you are not yet ready for a full proposal. Either is capped at 1000 words and assessed for coherence, originality and feasibility.
This guide did not read Oxford's funding sections and states no funding. Check the course page and the department's funding information for the cycle you apply in.
Oxford's page gives the official course title as Doctor of Philosophy in Computer Science, course code RD_CN1.
Students and families
Tell us about your degrees, your research experience, the research question you want to pursue and the supervisors or groups you have in mind. A senior adviser will review the academic profile before recommending how to develop the research statement.
