The porcelain doll bundles in the UK typically include a 500mm sized doll from the Jody franchise, along with accessories, outfits, and the doll itself. These bundles offer a complete set for collectors or children who enjoy playing with dolls, providing a comprehensive and detailed addition to their collection. The porcelain material of the doll adds a touch of elegance and sophistication to the set, making it a desirable choice for those looking for a high-quality and stylish doll.