Affiliate SEO is the work of getting pages that earn commission on referred sales to rank in search, typically reviews, comparisons and “best of” lists that send readers to a retailer through a tracked link. The publisher is paid when a reader clicks through and buys, so each page has to win the search result and then earn enough trust for a stranger to act on its advice.
How affiliate SEO works
A publisher joins a programme run by a retailer, either directly or through a network such as Awin, and receives links carrying a tracking ID. When someone clicks one of those links and buys within the agreed window, the publisher earns a percentage of the sale or a fixed fee.
The search side resembles any content site. You research commercial investigation queries such as “best cordless vacuum for pet hair” or “cheapest broadband for renters”, write pages that answer them properly, group related reviews into topics with internal links, and earn links from other sites. The difference is the scrutiny. Google’s ranking systems are built to reward reviews written by someone who has handled the product, and to push down pages that repeat the manufacturer’s specification with a buy button attached. Google’s own guidance on reviews asks for evidence of first-hand use, such as original photos or measurements, along with honest drawbacks and comparisons with alternatives.
Links to merchants should carry the rel="sponsored" attribute (nofollow is also accepted). That tells search engines the link is a paid relationship rather than an editorial endorsement, and keeps you clear of link scheme problems.
Why it matters
For a UK business, affiliate SEO matters from two sides. If you publish affiliate content, it can be a genuine income stream, but it sits in the category of sites most exposed to Google’s core updates, and traffic can fall sharply in a single week. If you sell products or services, affiliates may already rank for the comparison terms your buyers search, and a well-run programme can put you in front of people who are close to deciding.
There is a legal layer too. Under the CAP Code, affiliate content counts as marketing and must be obviously identifiable as such, before the reader engages with it. The ASA has upheld complaints where the commercial relationship was disclosed too late, too vaguely or out of sight. The Digital Markets, Competition and Consumers Act 2024 also gives the CMA powers to fine directly for unfair practices, including fake or misleading reviews, so invented “tested by our experts” claims carry real risk.
Common mistakes
- Writing ranked lists of products nobody on the site has used, padded with specification tables copied from the retailer.
- Hiding the affiliate disclosure on a separate page or below the last link.
- Creating hundreds of near-identical pages that swap one product or town name, which reads as thin content and drags the whole site down.
- Depending on one merchant or network, so a commission cut or a closed programme removes the income overnight.
- Renting space on a strong, unrelated domain to host coupon or review pages. Google treats this as site reputation abuse and removes or demotes those sections.
- Updating the date on old reviews without changing the content or rechecking prices and availability.
How to act on it
If you run affiliate content, audit it one page at a time. For each review, ask whether a reader could tell you used the product, whether the page says plainly who it is not for, whether prices are in pounds and current, and whether the disclosure appears before the first link. Merge or remove pages that add nothing beyond the retailer’s own listing, and spread revenue across several merchants. An email list gives you a route to readers that does not depend on Google.
If you are a UK retailer weighing up affiliates, look first at the searches where review publishers already outrank you, then decide whether your own pages can compete or whether a programme is the cheaper route. Either way, the pages that hold their positions are built through careful content SEO work: real first-hand detail, a clear structure and an honest verdict that sometimes recommends a competitor.