Domain 4 of Good Medical Practice is Trust and professionalism, and it is the domain most Portfolio Pathway portfolios under-build. It covers probity (honesty and integrity), the duty of candour, conflicts of interest and financial honesty, confidentiality, and raising concerns. The strongest evidence is often a complaint or an incident handled openly, with honest reflection and a change in practice. The portfolio itself is also a probity test: an accurate, consistent application with no unexplained gaps is evidence in its own right.
What Domain 4 actually covers
Good Medical Practice 2024 sets out four domains, and the fourth is Trust and professionalism. The General Medical Council (GMC) puts probity at the heart of it: being honest and trustworthy and acting with integrity. That sounds abstract until you break it into the concrete things the domain expects you to demonstrate, at which point it becomes very evidenceable.
You will see older Specialty Specific Guidance and curricula refer to this domain as Maintaining trust, the wording from the previous edition of Good Medical Practice. The substance is materially the same, and we cover the full set of changes and how the four domains fit together in the four GMC domains explained. The point for your portfolio is that Domain 4 is not a single tick box. It is four distinct evidence areas, each of which a Royal College assessor expects to see addressed.
Why it is the thin domain
There is a predictable shape to how senior doctors build a portfolio. Clinical competence in domain one fills itself from case logs and assessments. Safety and teamwork in domain three accrue from audit, quality improvement and significant event work. Domains one and three pile up almost by default. Domain four does not, because the everyday probity of a good doctor leaves a thin paper trail. You are honest in a thousand small ways every week, and almost none of it is documented.
Builds itself
- Clinical case logs and procedure numbers
- Workplace-based assessments
- Audit and quality improvement cycles
- Significant event analysis
- Teaching and supervision records
Has to be built deliberately
- Reflections on complaints and how you handled them
- Duty of candour examples
- Conflict of interest declarations
- Evidence of raising or acting on concerns
- Confidentiality and information governance
The fix is not to manufacture probity evidence. It is to recognise that you already generate it and to capture it deliberately. Every appraisal you complete contains a signed probity and health declaration. Every complaint you have responded to is a candour and integrity story. Every declaration of interest you have made is conflict evidence. The material exists; the discipline is gathering it and mapping it to the domain rather than leaving it scattered across years of appraisal folders.
The application itself is a probity test
This is the part applicants most often miss. Before an assessor reads a word of your reflective Domain 4 evidence, your portfolio has already made a statement about your probity, through its own accuracy and consistency. A portfolio is assessed on documentary evidence alone, so internal consistency is read as a proxy for honesty.
Dates and roles in your CV against your structured reports and your GMC record. Employment gaps that are unexplained. Claimed responsibilities that referees do not corroborate. Qualifications stated but not evidenced. A single unexplained discrepancy makes an assessor read everything else more sceptically.
So the most important Domain 4 work is often the least glamorous: make the structured CV exact, account honestly for every period including gaps, and make sure your referees can corroborate what you claim. Honesty about a career break, a period of remediation, or a complaint reads far better than a suspiciously smooth record that does not match the supporting documents. The portfolio that is scrupulously accurate is already evidencing the domain before it argues anything.
What counts as Domain 4 evidence
Once you look for it, Domain 4 evidence is everywhere in your working life. The job is to recognise it and pair each item with a short reflection that shows insight, not just occurrence.
Notice that several of these items overlap with other evidence types. A significant event you reflected on is both significant event analysis and, where you were open about harm, candour evidence. Patient concerns connect to patient feedback. Tag the same item to more than one domain where it genuinely speaks to each, rather than filing it once and losing the Domain 4 angle.
Complaints: evidence, not shame
The instinct with complaints is to bury them. That instinct is wrong for the portfolio, and it misreads what assessors are looking for. A complaint handled with openness, honest reflection and a genuine change in practice is some of the most persuasive Domain 4 evidence you can offer, because it shows integrity at exactly the moment integrity is tested. Almost every experienced doctor has had a complaint. A portfolio that pretends otherwise is less credible, not more.
The same structure applies to a complaint that was not upheld. You do not have to accept fault you do not own, but you can still show what the experience prompted you to review. Organisations such as the Parliamentary and Health Service Ombudsman set out principles of good complaint handling that are worth reflecting against: being open, fair, and putting things right. An assessor reading a well-handled complaint sees a doctor who can be trusted when things are difficult, which is the whole point of the domain.
The duty of candour
Candour is a professional duty, set out in joint GMC and Nursing and Midwifery Council guidance on being open and honest when things go wrong. The expectation is specific: when something goes wrong, you tell the person, you apologise, you offer an appropriate remedy or support, and you explain the short and long term effects. Alongside that, you are expected to be open with your own organisation and to report adverse incidents and near misses, helping build a learning culture rather than a defensive one.
For a portfolio, a candour episode is gold. Pick a real example, anonymise it carefully, and write a short reflective account that walks through those steps: what went wrong, how you were open about it, what you did to put it right, and what changed afterwards. The GMC is explicit that senior clinicians have a particular responsibility to set an example here, so a candour reflection also quietly evidences the consultant-level leadership the pathway is assessing.
Anyone can claim to be honest when things go well. Candour evidence shows honesty when there was an incentive not to be. That is exactly the signal a Domain 4 assessor is trying to find, and it is far more convincing than a generic statement of professional values.
Conflicts of interest and financial probity
Good Medical Practice requires honesty in financial and commercial dealings, and that personal interests do not affect professional judgement. The evidence assessors want is not a claim that you have no conflicts. It is proof that you identify, declare and manage them as a matter of routine. A doctor with private practice, pharmaceutical or device company links, expert witness work, or directorships who declares them cleanly is more trustworthy than one who claims a suspiciously blank slate.
Practically, include your declarations of interest and a short note on how you keep them separate from clinical decisions, for example how you handle referrals between your NHS and private work, or how you manage study funding. If your specialty involves frequent industry contact, this matters more, and your Specialty Specific Guidance may say so. The habit of routine, documented declaration is the evidence; the absence of conflicts is not the goal.
Raising and acting on concerns
The flip side of personal probity is what you do about other people's. GMC guidance on raising and acting on concerns about patient safety expects doctors to speak up when patients might be at risk, and senior doctors to act on concerns brought to them. Evidence here is delicate but valuable: an anonymised account of a time you escalated a safety or conduct concern, what you did, and how you supported a fair process, demonstrates exactly the professional courage Domain 4 is about.
Handle this evidence with care. Keep it anonymised, factual and free of grievance. The aim is to show sound judgement and integrity, not to relitigate a dispute. A measured account of raising a concern appropriately, with the patient interest at the centre, reads as maturity. A bitter one reads as the opposite, so write it in the same calm, reflective register you would use for any other piece of evidence, the discipline we set out in reflective practice writing.
Mapping across the four domains
Domain 4 is where portfolios most often run thin, so it pays to map your evidence across all four domains explicitly and check the fourth column is not empty. A single well-chosen item frequently spans more than one domain, and tagging it to Domain 4 as well as its obvious home is how you fill the gap without inventing anything.
Knowledge, skills and development
Clinical competence, CPD and staying current. Usually the best-evidenced domain.
Patients, partnership and communication
Consent, shared decisions and communication. Patient feedback lives here.
Colleagues, culture and safety
Teamwork, audit, quality improvement and significant events. Also usually well covered.
Trust and professionalism
Probity, candour, conflicts, confidentiality and conduct. The domain to check is not thin.
A practical test before you submit: open your evidence index and count how many items are tagged to Domain 4. If the answer is one or two, you have the common gap, and the fix is to revisit your appraisals, complaints and declarations and surface what is already there. The mapping logic across the curriculum sits in the Capabilities in Practice guide and is anchored in your Specialty Specific Guidance.
How Domain 4 expectations vary by specialty
The principles are common to every specialty, but the texture differs. Specialties with heavy industry contact lean harder on conflict declarations; those with high-risk procedures lean harder on candour and complaints; laboratory specialties lean on confidentiality and information governance. Read your specialty overview alongside your Specialty Specific Guidance to see where the emphasis falls for your application.
A note for internationally trained applicants. Probity expectations are universal, but the documentation differs. A certificate of good standing from each regulator you have been registered with is the international equivalent of a clean probity record, and you should provide one from every country you have practised in. Declare any overseas complaint or investigation honestly and explain the outcome; non-disclosure that later surfaces is far more damaging than the original matter. Where overseas evidence needs framing for a UK assessor, the guide to translating overseas evidence covers the practicalities.
Common mistakes that weaken Domain 4
Leaving the fourth column empty
The signature failure. A portfolio strong on domains one and three but with almost nothing tagged to Domain 4. Audit your own index and fill the gap from evidence you already have.
Hiding complaints
Concealing a complaint that a referee or your record will reveal anyway. Present it openly with reflection; concealment is the real probity failure, not the complaint.
Defensive reflection
An account that blames the patient, the system or a colleague. It reads as a lack of insight. Rewrite in a factual, accountable register that shows what you learned.
Inconsistencies in the application
Dates, roles or claims that do not match your CV, references or GMC record. Reconcile every detail before you submit; the consistency is itself probity evidence.
Where this sits in the evidence cluster
Domain 4 threads through the whole portfolio rather than sitting in one place. Build it alongside the evidence types below, tagging items to the trust domain as you go rather than leaving it to the end.
Domain 4 is easier to build in a department with a genuine learning culture, where candour is backed rather than punished and raising concerns is safe. If your current environment treats openness as a risk, that is a real constraint on this evidence, and on your wellbeing. A move to a department that handles incidents and concerns maturely is sometimes the most practical way to build this part of the portfolio honestly.
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Frequently asked questions
What is Domain 4 of Good Medical Practice?
Domain 4 of Good Medical Practice 2024 is Trust and professionalism. It covers being honest and trustworthy and acting with integrity, which the GMC calls probity. In practice it spans honesty about your experience, qualifications and role, honesty in financial and commercial dealings, declaring and managing conflicts of interest, maintaining professional boundaries, the duty of candour when things go wrong, and conduct that justifies the trust patients and the public place in the profession.
What counts as probity evidence for the Portfolio Pathway?
A range of evidence maps to Domain 4: your signed probity and health declarations from appraisal, reflections on complaints and how you handled them, examples of the duty of candour in action, conflict of interest declarations, evidence of confidentiality and information governance training, and examples of raising or acting on concerns. The application itself is also probity evidence, because an accurate, internally consistent portfolio with no unexplained gaps demonstrates honesty in a way assessors notice.
Should I include complaints in my Portfolio Pathway portfolio?
Yes, where you have them, presented as reflective evidence rather than hidden. A complaint handled openly, with honest reflection and a change in practice, is some of the strongest Domain 4 evidence available, because it shows integrity under pressure. What harms an application is concealment or a defensive, blame-shifting account. Even a complaint that was not upheld is worth including if you can show what you took from it. Follow your organisation's information governance rules and anonymise appropriately.
Does a complaint or a past fitness-to-practise issue stop me applying?
Not in itself. The GMC and Royal College assess your current fitness for specialist practice across the whole portfolio, not a single event. Most experienced doctors have had a complaint at some point. What matters is honesty and insight: declare what must be declared, explain it factually, and show what changed as a result. Concealing a declarable matter is far more damaging than the matter itself. If you are unsure what to declare, check the GMC guidance and your responsible officer rather than guessing.
How do I evidence the duty of candour?
Use a real example where something went wrong and you were open about it. The GMC and NMC joint guidance sets the expectation: tell the person, apologise, offer a remedy or support, and explain the effects, while also being open with your organisation and reporting incidents and near misses. Evidence it with an anonymised reflective account that shows you followed those steps and what you learned. Candour evidence is powerful precisely because it shows integrity in the moments that test it.
How do I show conflicts of interest and financial probity?
Show that you identify, declare and manage them rather than that you have none. Include your declarations of interest, for example private practice, pharmaceutical or device company links, or roles that could influence clinical decisions, and a note on how you keep them separate from patient care. Good Medical Practice requires honesty in financial and commercial dealings and that personal interests do not affect professional judgement. A clear, routine declaration habit is exactly the evidence Domain 4 is asking for.