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I would first like to clarify that the redirect of the users from the fitness website to the main health website will not damage the SEO and rankings of the main health website. However, since you are saying that the traffic is mostly international and only 1-5% of the users would actually be useful for the UK blog, I would rather suggest that you keep both websites, put minimal efforts and content on the fitness website and also indexing it, and you can find other ways to use (monetize) the rest of the traffic. For UK clients, you can put some banners, paid ads or referring articles to bring traffic and add credibility to the main site. you can also set it so that the banners show up only for the UK visitors. As mentioned, doing a 301 redirect from the fitness website to the main health website won't harm your rankings, and if you aren't willing to give the effort of minimally maintaining the fitness blog you can also have an agency managing it for you and monetizing the foreign traffic. Daniel Rika - Dalerio Consulting https://dalerioconsulting.com/ info@dalerioconsulting.com