pattern-library checked
GOV.UK Design System Radios component
Documents radio groups for one option from a list, fieldset and legend grouping, no careless pre-selection, optional hints, and validation errors for the group.
Pattern Decisions This Source Supports
| Pattern | Supported decision | Required contract | Claim note |
|---|---|---|---|
| Conditional reveal fields | Choose conditional reveal fields when one option needs a short, directly related follow-up field in the same local context. | Selecting the trigger shows the related field immediately under that trigger. | GOV.UK radio guidance anchors single-choice trigger behavior for conditional follow-up fields. |
| Dependent fields | Choose dependent fields when one answer controls another field's valid choices, requirement, editability, helper text, or validation. | Users encounter the controlling field before the dependent field in reading and tab order. | GOV.UK conditional radio guidance anchors the distinction between simple conditional reveal and dependent option/value management. |
| Radio group | Choose radio groups when the user must choose one option from a short visible set. | Only one option in the named group can be selected at a time. | GOV.UK radios guidance supports one option from a list, fieldset/legend grouping, no careless preselection, and group-level errors. |
Evidence Role
This source is treated as pattern-library evidence. Use it to validate the decision rules above, not as a visual style reference.
Publisher: Government Digital Service. Last checked: .