When you encounter a subdomain like uk.smartapply.indeed.com during a job search, it is natural to double-check its origin. My analysis confirms this is a standard gateway used by Indeed to process job applications. You are redirected from here to the main Indeed environment, which is the expected behavior for their technical workflow.
Since this is not a standalone commercial site, it does not need its own legal or 'about us' pages to be trustworthy. The safety of this link relies entirely on its parent company. Because the traffic flows directly into the verified Indeed ecosystem, you can treat this link with the same level of confidence you give to the main Indeed website. There is no evidence of this being a scam or an imitation site. If you have any reservations during your application process, you can always navigate to the Indeed UK homepage manually to find the same job posting.