The "best" company for embroidery designs samples can vary depending on your specific needs, preferences, and budget. However, some reputable companies in the UK known for their quality embroidery designs samples include:

Hawthorne & Heaney: They offer bespoke embroidery services and have worked with prestigious clients in fashion, interior design, and more.

Hand & Lock: With over 250 years of experience, Hand & Lock is renowned for its intricate and high-quality embroidery work, serving clients in various industries including fashion, military, and royalty.

London Embroidery Studio: This studio specializes in creating custom embroidery designs for fashion, textiles, and interiors, catering to both individuals and businesses.

The London Embroidery School: Not only does this school offer classes and workshops on embroidery techniques, but they also provide embroidery services and sell embroidery supplies.

The Royal School of Needlework: Known for its expertise in traditional hand embroidery techniques, the Royal School of Needlework offers courses, workshops, and bespoke embroidery services.