Domain Watch is a new automatic anti phishing initiative to help with the security of .UK domain names and help protect end users from any potential malicious phishing activity.
The service analyses domains using AI then the domains are manually checked and suspended. Once suspended the registrars receive a notification reason and registrants receive a direct email containing next steps to confirm the domains usage.
Once the domain has been confirmed for legitimate use the domain names are unsuspended.
This is all handled by Nominet directly and more information on the Domain Watch process can be found here.