Meet Our Experts

David Duggleby

Director | Auctioneer | Art Consultant

David established David Duggleby Auctioneers and Valuers with his wife, Jane, in 1996. What began as a small enterprise in Scarborough, managed by the couple alone, has since grown into a large operation with locations across Yorkshire, including valuation offices in Beverley and Harrogate, sister auction house Duggleby Stephenson of York, and three Movers and Storers operations based in Scarborough, Hornsea and Wetherby.

David and Jane have now stepped back from the day-to-day running of the business, although David remains closely connected to the auction world. He continues to consult on fine art valuations and can still be found at the rostrum presiding over our Fine Art sales.

Dannielle Blackledge MA

Business Development Manager | Specialist Valuer

Dannielle studied for her BA in Art History before going on to gain her Master’s in the subject at UCL. She began her career as a valuer in the Antiques & Silver department at Fellows before joining the team here at Dugglebys.

She specialises in ceramics, particularly early English porcelain, and has a keen interest in 18th- and 19th-century ceramics, silver and collectables. Her specialist knowledge is complemented by broad experience across the auction world and an enthusiasm for discovering and researching unusual pieces.

As our Business Development Manager, Dannielle spends much of her time out and about meeting new and existing clients, developing relationships and working on consignments of all kinds. Whether advising on an individual item, a collection or the contents of a property, she enjoys getting to know our clients and helping them find the best route to auction.

Jessica Tarver MA

Specialist Valuer & Catalogue Curator

Jess began her career in museum curation before moving into auction valuations. After studying History at university, she went on to gain a Master’s in Museum & Heritage Management. She spent ten years managing museum collections and curating exhibitions before bringing her considerable knowledge and research experience to the team at Dugglebys.

Jess specialises in militaria, taxidermy and entomology, alongside a number of our more specialist collecting fields. She is also an integral part of our Decorative Objects department and has extensive experience valuing a wide variety of antiques and collectors’ items.

Alongside curating a number of our specialist sales, Jess is now responsible for our Country Living sales, bringing together an eclectic mix of traditional, decorative and characterful pieces. Always keen to expand her knowledge, she particularly enjoys the opportunity to encounter, identify and research the unusual objects that come through our doors.

Coralie Thomson MA

Auctioneer | Specialist Valuer & Catalogue Curator

Coralie has a BA in Classics and Ancient History and went on to complete an MA in Classical and Ancient Studies at the University of Amsterdam, where she undertook an internship at the prestigious Rijksmuseum. She joined Dugglebys in 2021, bringing another dimension of knowledge and expertise to our valuations team.

Coralie specialises in fine art, furniture and antiquities, as well as Luxury & Designer items. Her broad range of interests gives her the opportunity to work with pieces spanning centuries of art, design and craftsmanship.

Much of Coralie’s time is spent out and about visiting clients, carrying out valuations and discovering fascinating pieces in homes and collections across the region. She particularly enjoys hearing the stories behind the objects she encounters and helping clients understand more about what they have. Coralie is also a familiar face at the rostrum, presiding over a number of our regular and specialist sales.

Chloe Mckenna

Specialist Valuer & Catalogue Curator

Chloe grew up surrounded by antiques, following two generations of antique dealers before her. Much of her childhood was spent attending auctions, and she was captivated by the excitement of sale day from an early age. By thirteen, she had her own jewellery stall, selling antique pieces and beginning to develop the knowledge that would later lead to a career in the industry.

Her career at Dugglebys has been marked by both versatility and growing specialisation. Having gained experience across a number of departments, Chloe has developed a broad understanding of the antiques and auction business. She specialises in silver, cameras and photography, collectors’ toys, and entertainment memorabilia with a particular passion for antique silver.

A natural people person, Chloe originally trained and qualified as a midwife before choosing to pursue her passion for auctions. She loves meeting customers, hearing the stories behind the objects they bring in for valuation and discovering the unique and unusual pieces that make the antiques world so fascinating.

Andrew Mcmillan

Specialist Valuer & Catalogue Curator

Andrew joined our team at Duggleby Stephenson of York in 2018, bringing with him around four decades of experience and knowledge. He began his career in auction houses in the south of England before making his way north to join the valuations team at Boulton & Cooper, where he worked for many years before the partnership that would become Duggleby Stephenson was formed.

Andrew has extensive experience valuing a wide range of items, with particular expertise in silver, ceramics and collectors’ items. Even after so many years in the profession, he still relishes the fact that no two days are quite the same and that there is always something different waiting to come through the doors.

Emma Knott

Specialist Valuer & Catalogue Curator

Emma began her journey at Dugglebys in 2016 as a trainee valuer and has gone on to become a highly regarded member of our valuations team. She studied Art and Textile Design at college before gaining her BA in the subject at university.

Over the years, Emma has developed knowledge across a broad range of areas. Her experience includes 20th-century ceramics and glass, alongside a longstanding interest in Japanese and Chinese art. In 2025, she joined our Jewellery department to further develop her expertise in antique and modern jewellery and watches.

Emma particularly enjoys researching consignments and uncovering the stories behind the pieces customers bring to us. She also loves those moments when an appraisal reveals that an overlooked or underestimated object is something rather special, demonstrating the value of understanding the history and craftsmanship behind each piece.

Holly Hammond

Specialist Valuer & Catalogue Curator

Holly began her career with Dugglebys during a work experience placement while studying for a BA in Curating and Art History at the University of York. Her knowledge and enthusiasm for fine art and antiques quickly earned her a full-time position as a trainee valuer, and she has continued to broaden her skills and expertise across the business ever since.

Holly has a particular interest in British and international modern art, enjoying the diverse cultural perspectives and innovative styles found within the field. She especially likes the challenge of researching works that are difficult to attribute and working with vendors to uncover the stories behind them.

Her growing knowledge across a variety of departments now sees Holly responsible for curating a number of our specialist sales, including The Period Home, Asian Art, and Yorkshire Masters & Makers. Her research skills, curiosity and determination make her a valuable member of both our Art department and the wider team.

Conrad Newton

Catalogue Curator

Conrad works across a vast range of items within our Furniture & Rugs department, bringing his knowledge and enthusiasm to everything from traditional furniture and furnishings to contemporary pieces and design.

He has a particular fondness for mid-century and modern items and curates our Modern Living & Design sale, alongside working on our regular furniture and rugs auctions.

Conrad enjoys the variety that comes with the department and the opportunity to research and catalogue such a diverse range of pieces. Whether working with a practical piece of furniture, an unusual design or something with a particularly interesting history, he takes great satisfaction in presenting each item at its best for auction.