A public consultation is built to gather informed views, evidence and alternatives, not to measure how many people support it. Response numbers alone cannot show what the population thinks. The better test is whether the evidence before the decision maker covers everyone the decision affects.
What does ‘representative’ actually mean in a public consultation?
In a survey, representative means a sample that supports conclusions about the whole population. In a consultation, it means something broader: that the decision maker has heard from the people, interests and evidence relevant to the decision. These are different tests, and a consultation can pass one while failing the other.
Survey research achieves the first meaning through random selection and careful handling of non-response. An open consultation cannot, because people choose whether to take part. The Scottish Government states that a consultation is not a vote, and not a population survey. The responses describe the people who responded.
The Government’s Growing up in the online world consultation shows the difference in practice. Its open consultation surveys were self-selecting and not nationally representative. Separate panel surveys were designed to be nationally representative, and only those could support national conclusions. One exercise, two instruments, two different questions.
Do large numbers make a consultation representative?
No. Volume shows that people responded, not that they resemble people who did not. The online world consultation received more than 116,000 responses, including more than 33,000 campaign responses. Its methodology says these reflected the reach and mobilisation capacity of the organising group, not the independent views of a representative cross-section of the public.
A large campaign is evidence of mobilisation. It is not automatically evidence of prevalence. Petitions raise the same point. The statutory consultee consultation reported 34,281 petition responses separately from 1,606 consultation responses, and counted campaign responses once in statistical summaries to avoid disproportionate weighting. The submissions were still considered.
Reporting that 62% of respondents supported a proposal is accurate. Reporting that 62% of the public supported it is a different claim, and a self-selecting consultation cannot normally support it. Presenting the first as the second is a process failure, and it hands influence to whoever can generate the most submissions.
What does the law say about representative consultation?
Representativeness is not a fifth Gunning principle. The Gunning principles, the legal test for fair public consultation, were endorsed by the Supreme Court in R (Moseley) v London Borough of Haringey [2014]. They require consultation while proposals are still formative, enough information for intelligent consideration, adequate time, and conscientious consideration of the responses.
Lord Reed stressed that consultation duties vary with the statute, the context and the purpose, and warned against a mechanistic approach. In Moseley the purpose was meaningful public participation, so ordinary members of the public needed enough information to understand realistic alternatives and the reasons for the preferred option. The law asks whether people could take part meaningfully, not whether respondents mirror the population.
The fourth principle matters most, because it moves attention from how many responded to what the decision maker did with the responses. Saying that only 3% of the population responded, so the exercise is insignificant, ignores evidence from directly affected people. Saying that 90% of respondents agreed, so the council must proceed, mistakes consultation for a vote. Neither engages with what the responses actually say.
How can decision makers test whether a consultation is representative?
Start by asking: representative of what? A decision maker may need to hear from people directly affected, service users, particular places, groups whose circumstances produce different impacts, or professionals with relevant expertise. Each is a different test, and a consultation can meet one while missing another.
The Cabinet Office’s Consultation Principles, central government guidance rather than a legal rules, advise considering the full range of people, businesses and voluntary bodies affected and targeting particular groups where appropriate.
The Government’s guide to inclusive social research describes seldom heard groups, people whose views decision makers are less likely to hear. That is a fairer framing than hard to reach, because it points at the engagement process rather than at the people. An online questionnaire that waits to see who turns up cannot show that those groups were heard.
Organisations need the same scrutiny. A response from a representative body tells the decision maker little until it is clear who the body represents, how that constituency is defined, and whether it reports members’ views or its own position.
Different methods answer different questions. Oxfordshire County Council’s 2024 to 2025 budget engagement recognised this, using a representative residents’ survey, then an open consultation and targeted work with seldom heard adults and with children and young people.
A public body that needs to know whether 65% or 35% of residents back a proposal needs a properly designed survey. One that needs evidence, reasons and alternatives needs consultation. Neither should be asked to do the other’s job.
Representativeness matters. The professional task is to know what a consultation is meant to represent, whether the relevant voices were heard, and what the responses show and do not show.
How tCI Can Help
Organisation Wide Learning Hub Access
Equip your entire team with professional consultation skills through one platform. Self paced courses, live virtual classrooms, practical toolkits and expert resources that build a shared baseline of competence across your organisation. Trusted by councils, NHS bodies and regulators nationwide.
Bespoke Training Workshops
Training that works with your real projects, not hypothetical scenarios. Sector tailored sessions help teams apply good practice to live challenges: sharpening consultation documents, building defensible codebooks, strengthening equality analyses. Half day or full day workshops for health, local government, planning and public service teams.
Coaching for Complex or High Risk Consultations
Expert guidance when the stakes are highest. One to one and small group coaching for senior officers navigating legally exposed or politically contentious decisions. Strengthen your judgement on proportionality, evidence standards and challenge management. Essential for organisations that may face judicial review risk or major service changes.
Whether you’re preparing for a high stakes service change, building long term consultation capability, or need confidence that your evidence approach will stand up to scrutiny, we can help.
Contact tCI: hello@consultationinstitute.org.