diff --git a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.HttpApi.HostWithIds/MyProjectNameHttpApiHostModule.cs b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.HttpApi.HostWithIds/MyProjectNameHttpApiHostModule.cs
index ac55c87569..d029cd0b1e 100644
--- a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.HttpApi.HostWithIds/MyProjectNameHttpApiHostModule.cs
+++ b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.HttpApi.HostWithIds/MyProjectNameHttpApiHostModule.cs
@@ -151,6 +151,7 @@ namespace MyCompanyName.MyProjectName
                 options.Languages.Add(new LanguageInfo("ar", "ar", "العربية"));
                 options.Languages.Add(new LanguageInfo("cs", "cs", "Čeština"));
                 options.Languages.Add(new LanguageInfo("en", "en", "English"));
+                options.Languages.Add(new LanguageInfo("en-GB", "en-GB", "English (UK)"));
                 options.Languages.Add(new LanguageInfo("fr", "fr", "Français"));
                 options.Languages.Add(new LanguageInfo("hu", "hu", "Magyar"));
                 options.Languages.Add(new LanguageInfo("pt-BR", "pt-BR", "Português"));
diff --git a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.IdentityServer/MyProjectNameIdentityServerModule.cs b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.IdentityServer/MyProjectNameIdentityServerModule.cs
index 07db333488..02a2fcd478 100644
--- a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.IdentityServer/MyProjectNameIdentityServerModule.cs
+++ b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.IdentityServer/MyProjectNameIdentityServerModule.cs
@@ -63,6 +63,7 @@ namespace MyCompanyName.MyProjectName
                 options.Languages.Add(new LanguageInfo("ar", "ar", "العربية"));
                 options.Languages.Add(new LanguageInfo("cs", "cs", "Čeština"));
                 options.Languages.Add(new LanguageInfo("en", "en", "English"));
+                options.Languages.Add(new LanguageInfo("en-GB", "en-GB", "English (UK)"));
                 options.Languages.Add(new LanguageInfo("fr", "fr", "Français"));
                 options.Languages.Add(new LanguageInfo("hu", "hu", "Magyar"));
                 options.Languages.Add(new LanguageInfo("pt-BR", "pt-BR", "Português"));
diff --git a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Web/MyProjectNameWebModule.cs b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Web/MyProjectNameWebModule.cs
index 5815dea9d7..606cdee1d4 100644
--- a/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Web/MyProjectNameWebModule.cs
+++ b/templates/app/aspnet-core/src/MyCompanyName.MyProjectName.Web/MyProjectNameWebModule.cs
@@ -161,6 +161,7 @@ namespace MyCompanyName.MyProjectName.Web
                 options.Languages.Add(new LanguageInfo("ar", "ar", "العربية"));
                 options.Languages.Add(new LanguageInfo("cs", "cs", "Čeština"));
                 options.Languages.Add(new LanguageInfo("en", "en", "English"));
+                options.Languages.Add(new LanguageInfo("en-GB", "en-GB", "English (UK)"));
                 options.Languages.Add(new LanguageInfo("hu", "hu", "Magyar"));
                 options.Languages.Add(new LanguageInfo("fr", "fr", "Français"));
                 options.Languages.Add(new LanguageInfo("pt-BR", "pt-BR", "Português"));
diff --git a/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.HttpApi.Host/MyProjectNameHttpApiHostModule.cs b/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.HttpApi.Host/MyProjectNameHttpApiHostModule.cs
index a14632e97f..db77093f0a 100644
--- a/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.HttpApi.Host/MyProjectNameHttpApiHostModule.cs
+++ b/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.HttpApi.Host/MyProjectNameHttpApiHostModule.cs
@@ -96,6 +96,7 @@ namespace MyCompanyName.MyProjectName
             {
                 options.Languages.Add(new LanguageInfo("cs", "cs", "Čeština"));
                 options.Languages.Add(new LanguageInfo("en", "en", "English"));
+                options.Languages.Add(new LanguageInfo("en-GB", "en-GB", "English (UK)"));
                 options.Languages.Add(new LanguageInfo("fr", "fr", "Français"));
                 options.Languages.Add(new LanguageInfo("hu", "hu", "Magyar"));
                 options.Languages.Add(new LanguageInfo("pt-BR", "pt-BR", "Português"));
diff --git a/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.IdentityServer/MyProjectNameIdentityServerModule.cs b/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.IdentityServer/MyProjectNameIdentityServerModule.cs
index 9b61558fa8..d576d9a0a5 100644
--- a/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.IdentityServer/MyProjectNameIdentityServerModule.cs
+++ b/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.IdentityServer/MyProjectNameIdentityServerModule.cs
@@ -104,6 +104,7 @@ namespace MyCompanyName.MyProjectName
             {
                 options.Languages.Add(new LanguageInfo("cs", "cs", "Čeština"));
                 options.Languages.Add(new LanguageInfo("en", "en", "English"));
+                options.Languages.Add(new LanguageInfo("en-GB", "en-GB", "English (UK)"));
                 options.Languages.Add(new LanguageInfo("fr", "fr", "Français"));
                 options.Languages.Add(new LanguageInfo("hu", "hu", "Magyar"));
                 options.Languages.Add(new LanguageInfo("pt-BR", "pt-BR", "Português"));
diff --git a/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.Web.Unified/MyProjectNameWebUnifiedModule.cs b/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.Web.Unified/MyProjectNameWebUnifiedModule.cs
index 199fdb4fc1..1f1f64bb78 100644
--- a/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.Web.Unified/MyProjectNameWebUnifiedModule.cs
+++ b/templates/module/aspnet-core/host/MyCompanyName.MyProjectName.Web.Unified/MyProjectNameWebUnifiedModule.cs
@@ -102,6 +102,7 @@ namespace MyCompanyName.MyProjectName
             {
                 options.Languages.Add(new LanguageInfo("cs", "cs", "Čeština"));
                 options.Languages.Add(new LanguageInfo("en", "en", "English"));
+                options.Languages.Add(new LanguageInfo("en-GB", "en-GB", "English (UK)"));
                 options.Languages.Add(new LanguageInfo("fr", "fr", "Français"));
                 options.Languages.Add(new LanguageInfo("hu", "hu", "Magyar"));
                 options.Languages.Add(new LanguageInfo("pt-BR", "pt-BR", "Português (Brasil)"));