The Team

Although we have a wide experience and knowledge we do not profess to know everything so where necessary, using our contacts, we will go that extra mile and find someone that does know about a particular area.

Mark Nelson-Griffiths

Mark has been involved in the antiques industry for many years. He was acting for private clients in London securing many high end sales and purchases. Mark now focuses on silver and was elected to LAPADA a number of years ago and acts as the silver consultant for NASADA Fairs.

Director, Auctioneer, Silver Specialist, Cataloguer and Probate Valuer

Stephen Giles

Stephen has a wealth of experience having worked for a number of major auction houses. Stephen began his career as assistant to the crown jeweller, William Summers, in 1982 at Garrard and Co. At Garrard and Co. he handled some of the finest jewels in the world and in 1987 he was head hunted to become Director of Jewellery at Bonhams. Over the following 10 years he grew the department to an international level.

In 1997 Stephen wrote the Millers Jewellery checklist, which was one of the series’ best sellers.

He joined Phillips Auctioneers as International Director of Jewellery responsible for the auctions in London and Geneva. While at Phillips he was responsible for some very high profile sales including achieving the highest price in the late 1990’s for a vivid blue diamond selling at over $600,000 per carat.

After a succession of different owners Stephen left to become a freelance specialist.

And now Stephen is a Senior Consultant for The Rostrum and looks after our London clients that he has introduced.

Senior Valuer and Auctioneer, London Office

Sarah Flynn

Sarah was Head of the Paintings Department at Cheffins for 18 years, building up a department that has handled some important consignments in recent years. Sarah is well-known for her discoveries, such as a Rembrandt etching in an Emmaus charity shop which sold for £9000; a J M W Turner watercolour of a Moorhen; four portraits of the ffolliot brothers, found in a Suffolk bungalow; one of the finest Burne-Jones drawings known of his muse, Lady Horner, found in a Cambridge private collection; a disregarded oil of Dedham Vale which turned out to be an early Constable sketch and a collection of Constable drawings, done on his honeymoon, which were a rediscovery.

Sarah began her career in the Old Masters department at Christie’s in London and in addition to her superb eye and wide-ranging knowledge, she is an expert on Modern British painters such as Glyn Philpot and Stanley Lewis.

Sarah will help to build the specialist East Anglian Sale and is delighted to look at anything – anywhere !

Senior Paintings Valuer

Howard Jones

Howard is energetic and full of enthusiasm and drive. Although relatively new to the auction and antiques scene he has got the bug. Using his experience in the Financial Services sector he plays a key role in the Company finances.

Director, Finance

Olly Webb

The Rostrum is lucky to have Olly as part of the Jewellery Department, who is a long-term and highly qualified gemmologist. 

Jewellery and Watches, Holt Office

Brian Watson

Brian Watson has been a dealer in glass for thirty years. He exhibits at major London antiques fairs including the LAPADA Fair, Olympia and the Decorative Antiques Fair, Battersea. He has been a regular member of the vetting committees of these fairs. He has also worked as a consultant for glass with several auction houses in the United Kingdom and France.

Glass Consultant

Tracey Rust-Andrews

Tracey has been involved in the auction industry for many years and loves the buzz of auctions and face to face contact with customers. She commands a profound knowledge and versatility of the back office requirements to an auction house.

Administration Manager

Rachel Simpson

Rachel trained originally as a rug weaver at Farnham art school before learning the oriental carpet trade in London, Turkey and India. Originally specialising in the art of restoration enabled her to handle rare and collectable tribal and decorative rugs as well as the modern commercial carpets. She continues to carry out restoration and cleaning and runs her own business at The Rug Studio.

Rugs and Carpets Consultant

Tolly Isgrove

Tolly has had an avid interest in silver, medals and coins since a young age and holds an in-depth knowledge of silver.

Silver Consultant

Andrew Gibb

Andrew has always had a deep love of art. Over the last 40 years this has developed into a particular interest in East Anglian artists, the artists of the Norwich School, and C19th and early C20th watercolours. For over 20 years he has traded in fine art as GlavenArt and has practised as a wonderfully sympathetic picture framer.

Picture Consultant

Hamza Borden

Hamza does all our catalogue photography and editing. He is also one of The Rostrum’s apprentices and Junior Cataloguer assisting with Silver and Jewellery.

Dave Bayle

Dave has a keen interest in auctions and looks after the day to day smooth running of the saleroom.

Head Porter

Other Consultants

We have a number of other consultants on whom we can call which include a LAPADA furniture member, an expert in Old Master Paintings, and an expert in Modern Art and Sculpture to name but a few.


The Rostrum are keen to promote younger people who are interested in their subjects and who are keen to be involved.