The provided source material consists of three web pages offering information and examples related to writing a resume for a porter position. These sources are primarily informational and provide guidance on resume structure, content, and best practices for job applications. They do not contain any information related to free samples, promotional offers, no-cost product trials, brand freebies, or mail-in sample programmes across categories such as beauty, baby care, pet products, health, food, and household goods. Furthermore, the sources are not UK-specific and do not address UK consumer topics.
As the task requires an article on free samples and promotional offers based exclusively on the provided context documents, and the provided materials are entirely unrelated to this topic, it is not possible to write the requested article. The source material is insufficient to produce any content on the specified subject matter.