diff --git a/docs/components/character-count.md b/docs/components/character-count.md
index bd97660b..377610ba 100644
--- a/docs/components/character-count.md
+++ b/docs/components/character-count.md
@@ -33,6 +33,7 @@ Check out the [max words validator](../validation/maxwords.md) for adding server
 | `form-group-*` | | Additional attributes to add to the generated form-group wrapper element. |
 | `id` | `string` | The `id` attribute for the generated `textarea` element. If not specified then a value is generated from the `name` attribute. |
 | `ignore-modelstate-errors` | `bool` | Whether ModelState errors on the ModelExpression specified by the `asp-for` attribute should be ignored when generating an error message. The default is `false`. |
+| `label-class` | `string` | Additional classes for the generated `label` element. |
 | `max-length` | `int?` | The maximum number of characters the generated `textarea` may contain. Required unless the `max-words` attribute is specified. |
 | `max-words` | `int?` | The maximum number of words the generated `textarea` may contain. Required unless the `max-length` attribute is specified. |
 | `name` | `string` | The `name` attribute for the generated `textarea` element. Required unless the `asp-for` attribute is specified. |
diff --git a/docs/components/file-upload.md b/docs/components/file-upload.md
index 7bfc9d03..377b1923 100644
--- a/docs/components/file-upload.md
+++ b/docs/components/file-upload.md
@@ -35,6 +35,7 @@
 | `id` | `string` | The `id` attribute for the generated `input` element. If not specified then a value is generated from the `name` attribute. |
 | `ignore-modelstate-errors` | `bool` | Whether ModelState errors on the ModelExpression specified by the `asp-for` attribute should be ignored when generating an error message. The default is `false`. |
 | `input-*` | | Additional attributes to add to the generated `input` element. |
+| `label-class` | `string` | Additional classes for the generated `label` element. |
 | `name` | `string` | The `name` attribute for the generated `input` element. Required unless the `asp-for` attribute is specified. |
 
 ### `<govuk-file-upload-label>`
diff --git a/docs/components/select.md b/docs/components/select.md
index ab4d79c8..3b44ebf5 100644
--- a/docs/components/select.md
+++ b/docs/components/select.md
@@ -27,6 +27,7 @@
 | `disabled` | `bool` | Whether the element should be disabled. The default is `false`. |
 | `id` | `string` | The `id` attribute for the generated `select` element. If not specified then a value is generated from the `name` attribute. |
 | `ignore-modelstate-errors` | `bool` | Whether ModelState errors on the ModelExpression specified by the `asp-for` attribute should be ignored when generating an error message. The default is `false`. |
+| `label-class` | `string` | Additional classes for the generated `label` element. |
 | `name` | `string` | The `name` attribute for the generated `select` element. Required unless the `asp-for` attribute is specified. |
 | `select-*` | | Additional attributes to add to the generated `select` element. |
 
diff --git a/docs/components/text-input.md b/docs/components/text-input.md
index 100dd6b2..cac871c8 100644
--- a/docs/components/text-input.md
+++ b/docs/components/text-input.md
@@ -53,6 +53,7 @@ The content is the HTML to use within the generated component.
 | `id` | `string` | The `id` attribute for the generated `input` element. If not specified then a value is generated from the `name` attribute. |
 | `ignore-modelstate-errors` | `bool` | Whether ModelState errors on the ModelExpression specified by the `asp-for` attribute should be ignored when generating an error message. The default is `false`. |
 | `input-*` | | Additional attributes to add to the generated `input` element. |
+| `label-class` | `string` | Additional classes for the generated `label` element. |
 | `name` | `string` | The `name` attribute for the generated `input` element. Required unless the `asp-for` attribute is specified. |
 | `inputmode` | `string` | The `inputmode` attribute for the generated `input` element. |
 | `pattern` | `string` | The `pattern` attribute for the generated `input` element. |
diff --git a/docs/components/textarea.md b/docs/components/textarea.md
index a6e21c67..18c1ad23 100644
--- a/docs/components/textarea.md
+++ b/docs/components/textarea.md
@@ -29,6 +29,7 @@
 | `disabled` | `bool` | Whether the textarea should be disabled. The default is `false`. |
 | `id` | `string` | The `id` attribute for the generated `textarea` element. If not specified then a value is generated from the `name` attribute. |
 | `ignore-modelstate-errors` | `bool` | Whether ModelState errors on the ModelExpression specified by the `asp-for` attribute should be ignored when generating an error message. The default is `false`. |
+| `label-class` | `string` | Additional classes for the generated `label` element. |
 | `name` | `string` | The `name` attribute for the generated `textarea` element. Required unless the `asp-for` attribute is specified. |
 | `rows` | `int` | The `rows` attribute for the generated `textarea` element. The default is `5`. |
 | `spellcheck` | `bool?` | The `spellcheck` attribute for the generated `textarea` element. The default is `null`. |
diff --git a/src/GovUk.Frontend.AspNetCore/AttributeDictionaryExtensions.cs b/src/GovUk.Frontend.AspNetCore/AttributeDictionaryExtensions.cs
index af90c72f..a090fdf1 100644
--- a/src/GovUk.Frontend.AspNetCore/AttributeDictionaryExtensions.cs
+++ b/src/GovUk.Frontend.AspNetCore/AttributeDictionaryExtensions.cs
@@ -16,7 +16,7 @@ public static class AttributeDictionaryExtensions
         /// </summary>
         /// <param name="attributeDictionary">The <see cref="AttributeDictionary"/> to add the CSS class name to.</param>
         /// <param name="value">The CSS class name to add.</param>
-        public static void MergeCssClass(this AttributeDictionary attributeDictionary, string value)
+        public static void MergeCssClass(this AttributeDictionary attributeDictionary, string? value)
         {
             Guard.ArgumentNotNull(nameof(attributeDictionary), attributeDictionary);
 
diff --git a/src/GovUk.Frontend.AspNetCore/TagHelpers/CharacterCountTagHelper.cs b/src/GovUk.Frontend.AspNetCore/TagHelpers/CharacterCountTagHelper.cs
index 6043d6bd..15ac1566 100644
--- a/src/GovUk.Frontend.AspNetCore/TagHelpers/CharacterCountTagHelper.cs
+++ b/src/GovUk.Frontend.AspNetCore/TagHelpers/CharacterCountTagHelper.cs
@@ -26,6 +26,7 @@ public class CharacterCountTagHelper : FormGroupTagHelperBase
         private const string DisabledAttributeName = "disabled";
         private const string FormGroupAttributesPrefix = "form-group-";
         private const string IdAttributeName = "id";
+        private const string LabelClassAttributeName = "label-class";
         private const string MaxLengthAttributeName = "max-length";
         private const string MaxWordsLengthAttributeName = "max-words";
         private const string NameAttributeName = "name";
@@ -86,6 +87,12 @@ internal CharacterCountTagHelper(IGovUkHtmlGenerator? htmlGenerator = null, IMod
         [HtmlAttributeName(IdAttributeName)]
         public string? Id { get; set; }
 
+        /// <summary>
+        /// Additional classes for the generated <c>label</c> element.
+        /// </summary>
+        [HtmlAttributeName(LabelClassAttributeName)]
+        public string? LabelClass { get; set; }
+
         /// <summary>
         /// The maximum number of characters the generated <c>textarea</c> may contain.
         /// </summary>
@@ -217,7 +224,7 @@ private protected override IHtmlContent GenerateFormGroupContent(
         {
             var contentBuilder = new HtmlContentBuilder();
 
-            var label = GenerateLabel(formGroupContext);
+            var label = GenerateLabel(formGroupContext, LabelClass);
             contentBuilder.AppendHtml(label);
 
             var hint = GenerateHint(tagHelperContext, formGroupContext);
diff --git a/src/GovUk.Frontend.AspNetCore/TagHelpers/FileUploadTagHelper.cs b/src/GovUk.Frontend.AspNetCore/TagHelpers/FileUploadTagHelper.cs
index 8d6cf715..299ff9d9 100644
--- a/src/GovUk.Frontend.AspNetCore/TagHelpers/FileUploadTagHelper.cs
+++ b/src/GovUk.Frontend.AspNetCore/TagHelpers/FileUploadTagHelper.cs
@@ -20,6 +20,7 @@ public class FileUploadTagHelper : FormGroupTagHelperBase
 
         private const string AttributesPrefix = "input-";
         private const string IdAttributeName = "id";
+        private const string LabelClassAttributeName = "label-class";
         private const string NameAttributeName = "name";
 
         /// <summary>
@@ -52,6 +53,12 @@ internal FileUploadTagHelper(IGovUkHtmlGenerator? htmlGenerator = null, IModelHe
         [HtmlAttributeName(DictionaryAttributePrefix = AttributesPrefix)]
         public IDictionary<string, string?> InputAttributes { get; set; } = new Dictionary<string, string?>();
 
+        /// <summary>
+        /// Additional classes for the generated <c>label</c> element.
+        /// </summary>
+        [HtmlAttributeName(LabelClassAttributeName)]
+        public string? LabelClass { get; set; }
+
         /// <summary>
         /// The <c>name</c> attribute for the generated <c>input</c> element.
         /// </summary>
@@ -72,7 +79,7 @@ private protected override IHtmlContent GenerateFormGroupContent(
         {
             var contentBuilder = new HtmlContentBuilder();
 
-            var label = GenerateLabel(formGroupContext);
+            var label = GenerateLabel(formGroupContext, LabelClass);
             contentBuilder.AppendHtml(label);
 
             var hint = GenerateHint(tagHelperContext, formGroupContext);
diff --git a/src/GovUk.Frontend.AspNetCore/TagHelpers/FormGroupTagHelperBase.cs b/src/GovUk.Frontend.AspNetCore/TagHelpers/FormGroupTagHelperBase.cs
index 58907940..31034d3f 100644
--- a/src/GovUk.Frontend.AspNetCore/TagHelpers/FormGroupTagHelperBase.cs
+++ b/src/GovUk.Frontend.AspNetCore/TagHelpers/FormGroupTagHelperBase.cs
@@ -193,7 +193,7 @@ void AddErrorToFormErrorContext()
             }
         }
 
-        internal IHtmlContent GenerateLabel(FormGroupContext formGroupContext)
+        internal IHtmlContent GenerateLabel(FormGroupContext formGroupContext, string? labelClass)
         {
             // We need some content for the label; if AspFor is null then label content must have been specified
             if (AspFor == null && formGroupContext.Label?.Content == null)
@@ -206,7 +206,9 @@ internal IHtmlContent GenerateLabel(FormGroupContext formGroupContext)
 
             var isPageHeading = formGroupContext.Label?.IsPageHeading ?? ComponentGenerator.LabelDefaultIsPageHeading;
             var content = formGroupContext.Label?.Content;
-            var attributes = formGroupContext.Label?.Attributes;
+
+            var attributes = formGroupContext.Label?.Attributes?.ToAttributeDictionary() ?? new();
+            attributes.MergeCssClass(labelClass);
 
             var resolvedContent = content ??
                 new HtmlString(HtmlEncoder.Default.Encode(ModelHelper.GetDisplayName(ViewContext!, AspFor!.ModelExplorer, AspFor.Name) ?? string.Empty));
diff --git a/src/GovUk.Frontend.AspNetCore/TagHelpers/SelectTagHelper.cs b/src/GovUk.Frontend.AspNetCore/TagHelpers/SelectTagHelper.cs
index 95cbf530..909d0f1d 100644
--- a/src/GovUk.Frontend.AspNetCore/TagHelpers/SelectTagHelper.cs
+++ b/src/GovUk.Frontend.AspNetCore/TagHelpers/SelectTagHelper.cs
@@ -23,6 +23,7 @@ public class SelectTagHelper : FormGroupTagHelperBase
         private const string DescribedByAttributeName = "described-by";
         private const string DisabledAttributeName = "disabled";
         private const string IdAttributeName = "id";
+        private const string LabelClassAttributeName = "label-class";
         private const string NameAttributeName = "name";
 
         /// <summary>
@@ -65,6 +66,12 @@ internal SelectTagHelper(IGovUkHtmlGenerator? htmlGenerator = null, IModelHelper
         [HtmlAttributeName(IdAttributeName)]
         public string? Id { get; set; }
 
+        /// <summary>
+        /// Additional classes for the generated <c>label</c> element.
+        /// </summary>
+        [HtmlAttributeName(LabelClassAttributeName)]
+        public string? LabelClass { get; set; }
+
         /// <summary>
         /// The <c>name</c> attribute for the generated <c>select</c> element.
         /// </summary>
@@ -93,7 +100,7 @@ private protected override IHtmlContent GenerateFormGroupContent(
 
             var contentBuilder = new HtmlContentBuilder();
 
-            var label = GenerateLabel(formGroupContext);
+            var label = GenerateLabel(formGroupContext, LabelClass);
             contentBuilder.AppendHtml(label);
 
             var hint = GenerateHint(tagHelperContext, formGroupContext);
diff --git a/src/GovUk.Frontend.AspNetCore/TagHelpers/TextAreaTagHelper.cs b/src/GovUk.Frontend.AspNetCore/TagHelpers/TextAreaTagHelper.cs
index 2f6a7612..e91a2576 100644
--- a/src/GovUk.Frontend.AspNetCore/TagHelpers/TextAreaTagHelper.cs
+++ b/src/GovUk.Frontend.AspNetCore/TagHelpers/TextAreaTagHelper.cs
@@ -23,6 +23,7 @@ public class TextAreaTagHelper : FormGroupTagHelperBase
         private const string AutocompleteAttributeName = "autocomplete";
         private const string DisabledAttributeName = "disabled";
         private const string IdAttributeName = "id";
+        private const string LabelClassAttributeName = "label-class";
         private const string NameAttributeName = "name";
         private const string RowsAttributeName = "rows";
         private const string SpellcheckAttributeName = "spellcheck";
@@ -64,6 +65,12 @@ internal TextAreaTagHelper(IGovUkHtmlGenerator? htmlGenerator = null, IModelHelp
         [HtmlAttributeName(IdAttributeName)]
         public string? Id { get; set; }
 
+        /// <summary>
+        /// Additional classes for the generated <c>label</c> element.
+        /// </summary>
+        [HtmlAttributeName(LabelClassAttributeName)]
+        public string? LabelClass { get; set; }
+
         /// <summary>
         /// The <c>name</c> attribute for the generated <c>textarea</c> element.
         /// </summary>
@@ -105,7 +112,7 @@ private protected override IHtmlContent GenerateFormGroupContent(
         {
             var contentBuilder = new HtmlContentBuilder();
 
-            var label = GenerateLabel(formGroupContext);
+            var label = GenerateLabel(formGroupContext, LabelClass);
             contentBuilder.AppendHtml(label);
 
             var hint = GenerateHint(tagHelperContext, formGroupContext);
diff --git a/src/GovUk.Frontend.AspNetCore/TagHelpers/TextInputTagHelper.cs b/src/GovUk.Frontend.AspNetCore/TagHelpers/TextInputTagHelper.cs
index be6c86ee..91753894 100644
--- a/src/GovUk.Frontend.AspNetCore/TagHelpers/TextInputTagHelper.cs
+++ b/src/GovUk.Frontend.AspNetCore/TagHelpers/TextInputTagHelper.cs
@@ -26,6 +26,7 @@ public class TextInputTagHelper : FormGroupTagHelperBase
         private const string DisabledAttributeName = "disabled";
         private const string IdAttributeName = "id";
         private const string InputModeAttributeName = "inputmode";
+        private const string LabelClassAttributeName = "label-class";
         private const string NameAttributeName = "name";
         private const string PatternAttributeName = "pattern";
         private const string SpellcheckAttributeName = "spellcheck";
@@ -46,8 +47,8 @@ public TextInputTagHelper()
 
         internal TextInputTagHelper(IGovUkHtmlGenerator? htmlGenerator = null, IModelHelper? modelHelper = null)
             : base(
-                  htmlGenerator ?? new ComponentGenerator(),
-                  modelHelper ?? new DefaultModelHelper())
+                htmlGenerator ?? new ComponentGenerator(),
+                modelHelper ?? new DefaultModelHelper())
         {
         }
 
@@ -88,6 +89,12 @@ internal TextInputTagHelper(IGovUkHtmlGenerator? htmlGenerator = null, IModelHel
         [HtmlAttributeName(DictionaryAttributePrefix = AttributesPrefix)]
         public IDictionary<string, string?>? InputAttributes { get; set; } = new Dictionary<string, string?>();
 
+        /// <summary>
+        /// Additional classes for the generated <c>label</c> element.
+        /// </summary>
+        [HtmlAttributeName(LabelClassAttributeName)]
+        public string? LabelClass { get; set; }
+
         /// <summary>
         /// The <c>name</c> attribute for the generated <c>input</c> element.
         /// </summary>
@@ -160,7 +167,7 @@ private protected override IHtmlContent GenerateFormGroupContent(
 
             var contentBuilder = new HtmlContentBuilder();
 
-            var label = GenerateLabel(formGroupContext);
+            var label = GenerateLabel(formGroupContext, LabelClass);
             contentBuilder.AppendHtml(label);
 
             var hint = GenerateHint(tagHelperContext, formGroupContext);
diff --git a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/CharacterCountTagHelperTests.cs b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/CharacterCountTagHelperTests.cs
index 0ebdc11f..6afd513c 100644
--- a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/CharacterCountTagHelperTests.cs
+++ b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/CharacterCountTagHelperTests.cs
@@ -51,7 +51,8 @@ public async Task ProcessAsync_WithMaxWords_GeneratesExpectedOutput()
                 Id = "my-id",
                 Name = "my-name",
                 MaxWords = 10,
-                Threshold = 90
+                Threshold = 90,
+                LabelClass = "additional-label-class"
             };
 
             // Act
@@ -61,7 +62,7 @@ public async Task ProcessAsync_WithMaxWords_GeneratesExpectedOutput()
             var expectedHtml = @"
 <div class=""govuk-character-count"" data-module=""govuk-character-count"" data-maxwords=""10"" data-threshold=""90"">
     <div class=""govuk-form-group"">
-        <label class=""govuk-label"" for=""my-id"">The label</label>
+        <label class=""govuk-label additional-label-class"" for=""my-id"">The label</label>
         <div class=""govuk-hint"" id=""my-id-hint"">The hint</div>
         <textarea class=""govuk-textarea govuk-js-character-count"" id=""my-id"" name=""my-name"" rows=""5"" aria-describedby=""my-id-hint""></textarea>
     </div>
diff --git a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/FileUploadTagHelperTests.cs b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/FileUploadTagHelperTests.cs
index a3b0ac91..c6ba9471 100644
--- a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/FileUploadTagHelperTests.cs
+++ b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/FileUploadTagHelperTests.cs
@@ -45,7 +45,8 @@ public async Task ProcessAsync_GeneratesExpectedOutput()
             {
                 Id = "my-id",
                 DescribedBy = "describedby",
-                Name = "my-id"
+                Name = "my-id",
+                LabelClass = "additional-label-class"
             };
 
             // Act
@@ -54,7 +55,7 @@ public async Task ProcessAsync_GeneratesExpectedOutput()
             // Assert
             var expectedHtml = @"
 <div class=""govuk-form-group"">
-    <label for=""my-id"" class=""govuk-label"">The label</label>
+    <label for=""my-id"" class=""govuk-label additional-label-class"">The label</label>
     <div id=""my-id-hint"" class=""govuk-hint"">The hint</div>
     <input aria-describedby=""describedby my-id-hint"" class=""govuk-file-upload"" id=""my-id"" name=""my-id"" type=""file"">
 </div>";
diff --git a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/FormGroupTagHelperBaseTests.cs b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/FormGroupTagHelperBaseTests.cs
index 66e63dd7..527fc4fa 100644
--- a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/FormGroupTagHelperBaseTests.cs
+++ b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/FormGroupTagHelperBaseTests.cs
@@ -511,7 +511,7 @@ public void GenerateLabel_NoLabelContentOnContextOrAspFor_ThrowsInvalidOperation
             };
 
             // Act
-            var ex = Record.Exception(() => tagHelper.GenerateLabel(formGroupContext));
+            var ex = Record.Exception(() => tagHelper.GenerateLabel(formGroupContext, labelClass: null));
 
             // Assert
             Assert.IsType<InvalidOperationException>(ex);
@@ -533,7 +533,7 @@ public void GenerateLabel_LabelContentOnContext_ReturnsContentFromContext()
             };
 
             // Act
-            var label = tagHelper.GenerateLabel(formGroupContext);
+            var label = tagHelper.GenerateLabel(formGroupContext, labelClass: null);
 
             // Assert
             Assert.NotNull(label);
@@ -562,7 +562,7 @@ public void GenerateLabel_NoLabelContentOnContext_ReturnsContentFromAspFor()
             };
 
             // Act
-            var label = tagHelper.GenerateLabel(formGroupContext);
+            var label = tagHelper.GenerateLabel(formGroupContext, labelClass: null);
 
             // Assert
             Assert.NotNull(label);
@@ -592,7 +592,7 @@ public void GenerateLabel_LabelContentOnContextAndAspFor_ReturnsContentFromConte
             };
 
             // Act
-            var label = tagHelper.GenerateLabel(formGroupContext);
+            var label = tagHelper.GenerateLabel(formGroupContext, labelClass: null);
 
             // Assert
             Assert.NotNull(label);
@@ -751,7 +751,7 @@ private protected override IHtmlContent GenerateFormGroupContent(
             {
                 var contentBuilder = new HtmlContentBuilder();
 
-                var label = GenerateLabel(formGroupContext);
+                var label = GenerateLabel(formGroupContext, labelClass: null);
                 contentBuilder.AppendHtml(label);
 
                 var hint = GenerateHint(tagHelperContext, formGroupContext);
diff --git a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/SelectTagHelperTests.cs b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/SelectTagHelperTests.cs
index 95e14804..3389584c 100644
--- a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/SelectTagHelperTests.cs
+++ b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/SelectTagHelperTests.cs
@@ -70,7 +70,8 @@ public async Task ProcessAsync_GeneratesExpectedOutput()
             {
                 Id = "my-id",
                 DescribedBy = "describedby",
-                Name = "my-name"
+                Name = "my-name",
+                LabelClass = "additional-label-class"
             };
 
             // Act
@@ -79,7 +80,7 @@ public async Task ProcessAsync_GeneratesExpectedOutput()
             // Assert
             var expectedHtml = @"
 <div class=""govuk-form-group"">
-    <label for=""my-id"" class=""govuk-label"">The label</label>
+    <label for=""my-id"" class=""govuk-label additional-label-class"">The label</label>
     <div id=""my-id-hint"" class=""govuk-hint"">The hint</div>
     <select aria-describedby=""describedby my-id-hint"" class=""govuk-select"" id=""my-id"" name=""my-name"">
         <option>First</option>
diff --git a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/TextAreaTagHelperTests.cs b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/TextAreaTagHelperTests.cs
index 4864f7b5..6dfe3389 100644
--- a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/TextAreaTagHelperTests.cs
+++ b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/TextAreaTagHelperTests.cs
@@ -48,7 +48,8 @@ public async Task ProcessAsync_GeneratesExpectedOutput()
             var tagHelper = new TextAreaTagHelper()
             {
                 Id = "my-id",
-                Name = "my-name"
+                Name = "my-name",
+                LabelClass = "additional-label-class"
             };
 
             // Act
@@ -57,7 +58,7 @@ public async Task ProcessAsync_GeneratesExpectedOutput()
             // Assert
             var expectedHtml = @"
 <div class=""govuk-form-group"">
-    <label class=""govuk-label"" for=""my-id"">The label</label>
+    <label class=""govuk-label additional-label-class"" for=""my-id"">The label</label>
     <div class=""govuk-hint"" id=""my-id-hint"">The hint</div>
     <textarea class=""govuk-textarea govuk-js-textarea"" id=""my-id"" name=""my-name"" rows=""5"" aria-describedby=""my-id-hint""></textarea>
 </div>";
diff --git a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/TextInputTagHelperTests.cs b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/TextInputTagHelperTests.cs
index 6c49510b..49de0efc 100644
--- a/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/TextInputTagHelperTests.cs
+++ b/test/GovUk.Frontend.AspNetCore.Tests/TagHelpers/TextInputTagHelperTests.cs
@@ -50,7 +50,8 @@ public async Task ProcessAsync_GeneratesExpectedOutput()
                 InputMode = "numeric",
                 Pattern = "[0-9]*",
                 Type = "number",
-                Value = "42"
+                Value = "42",
+                LabelClass = "additional-label-class"
             };
 
             // Act
@@ -59,7 +60,7 @@ public async Task ProcessAsync_GeneratesExpectedOutput()
             // Assert
             var expectedHtml = @"
 <div class=""govuk-form-group"">
-    <label for=""my-id"" class=""govuk-label"">The label</label>
+    <label for=""my-id"" class=""govuk-label additional-label-class"">The label</label>
     <div id=""my-id-hint"" class=""govuk-hint"">The hint</div>
     <input
         aria-describedby=""describedby my-id-hint""