It normally takes anywhere from 2-4 weeks for Reviews.co.uk/Reviews.io to sync your product reviews with the Google Shopping platform. For the best matching results we need each product that we have a review for to have a GTIN number. Once you get product reviews listed in Google you can expect a boost in brand visibility, increased CTR (Click Through Rate) and a reduction in CPC costs (Cost Per Click). Our complex algorithm automatically removes all reviews that do not adhere to Google Shopping Reviews guidelines. We have found that this increases the matching and actually speeds up the time it takes reviews to become visible in Google Shopping.