If you decide to consolidate your sites by serving the exact same content across multiple domains, you are creating duplicate content. While this isn’t typically deceptive, it strictly fits the definition because you’re replicating identical information on different URLs, a major SEO pitfall in 2026.
When Google encounters these two domains as separate sites, your consolidated content may suffer from ranking dilution. For instance, if you have two links to your content directing to different domains, Google may interpret them as one link to a UK version and one to a US version, effectively splitting your ranking authority instead of combining it.
However, there is a straightforward solution to resolve this in the modern SEO landscape. First, select your preferred domain spelling and host your content exclusively there. Then, implement a 301 redirect to automatically direct traffic from the alternate domain to your preferred one. Google follows these redirects seamlessly, ensuring that links to either spelling contribute to the ranking of your primary content. Full Discussion Here