diff --git a/homeassistant/components/alexa/capabilities.py b/homeassistant/components/alexa/capabilities.py
index 25ec43b689c..3963372fec1 100644
--- a/homeassistant/components/alexa/capabilities.py
+++ b/homeassistant/components/alexa/capabilities.py
@@ -903,6 +903,7 @@ class AlexaContactSensor(AlexaCapability):
         "en-CA",
         "en-IN",
         "en-US",
+        "en-GB",
         "es-ES",
         "it-IT",
         "ja-JP",
@@ -951,6 +952,7 @@ class AlexaMotionSensor(AlexaCapability):
         "en-CA",
         "en-IN",
         "en-US",
+        "en-GB",
         "es-ES",
         "it-IT",
         "ja-JP",