Hey @MrAnderson. Thank you for showing your interest in the Dome Siren! This is only compatible with the NA versions of the Ring Alarm at this time, and we do not have a siren that is certified to work with the UK Alarm. We are still working to improve integration with this new Alarm Base Station we made for the UK, and we will make sure to post in our News and Announcements section when we have more items that are compatible with the UK Alarm. 