This Practice Note addresses issues that often arise when drafting and negotiating endorsement agreements in England and Wales. In a typical endorsement agreement, an advertiser will engage a public figure to promote the advertiser’s products or services. The promotion could encompass a wide array of activities, including TV ads, print ads, public appearances, and posts on social media. What is an ‘endorser’? An endorser is an individual, typically a public figure such as a celebrity, athlete, or subject matter expert, who formally lends their name, image, persona, or reputation to a product, service or brand as part of a commercial arrangement. Endorsers are engaged to enhance brand visibility, credibility, and consumer trust by publicly aligning themselves with a product, either through direct promotion or association. They may appear in traditional advertising channels (such as television, print, out-of-home, and digital media), act as brand ambassadors, or participate in events, PR campaigns and product launches. Endorsers typically appear in brand-owned content or controlled marketing environments. This differentiates them from influencers who primarily operate via their own social media platforms and