Should a quote form allow one choice or several?
A company wants both a website and product photography, but choosing the second option clears the first. Elsewhere the form accepts two incompatible delivery preferences. This is more than a choice between round and square controls. The business needs to decide which answers can be valid together. The quote flow below is an original illustrative example.

Do not ask two decisions in one question
“Which services do you need?” and “Which is your first priority?” have different meanings. In our example, someone can request a website and product photography together, then choose the main topic for the first discussion. Combining those decisions produces an ambiguous record for the team.
For each option, note whether it can coexist with the others. Do this before choosing a visual component. Also decide how someone who has not settled their scope can continue without inventing an answer.
Match the control to the answer logic
GOV.UK distinguishes checkboxes for multiple selections from radios for one answer in a group. It also cautions against relying on shape alone to explain the selection limit. See the checkbox example and radio example.
Apply the distinction with a clear instruction such as “Choose all services you need” or “Choose your first priority”. Visual cards can still work, provided the underlying control has the appropriate keyboard behaviour and accessible meaning. Decoration should not change the question.
Do not turn uncertainty into a false answer
“Let us work out the scope together” may be a valid response in this example. Preselecting website design does not express that uncertainty. A usable “Not sure yet” answer can be more informative than an apparently definite choice the visitor never made.
Allowing “None” alongside named services can create a contradictory record. Decide whether to explain the conflict, clear an incompatible choice or redesign the question. If the interface removes an answer, make the change understandable to the person completing it.
Connect conditional questions to the selected service
Selecting photography might reveal a product-count question. Decide what happens to its value when photography is deselected. A hidden old answer should not make the team believe that service is still requested. This is a saved-data decision as well as a visibility decision.
- Select two services and check that both remain in the summary.
- Change a single priority and verify the old answer is replaced.
- Try uncertainty and incompatible answers.
- Make selections with a keyboard and inspect the resulting record.
Read the saved summary in business language
During acceptance, review a readable summary such as “Services: website and product photography; first priority: website”, not only internal codes. Selecting an option here expresses an enquiry; it is not acceptance of a price or contract.
Our enquiry form guide covers field scope. The website design service can help turn these behaviours into delivery checks. Our project archive shows real work; the illustrative form is not evidence of a measured conversion result.
Frequently asked questions
Can visual cards replace standard selection controls?
They can provide the visual treatment, but the selection meaning, keyboard behaviour and accessible name must remain correct. A colour change alone is insufficient.
Does every question need an “Other” option?
No. Decide how out-of-scope needs should be handled. A short explanation field or a route to discuss uncertainty may be suitable where it serves a real purpose.
