Antonia Agnew and Felicity Marno were the two principals in Stockspring Antiques, which was founded in 1979. After university they both studied for the Diploma in the History of Fine and Decorative Art from the Study Centre, London. Subsequent to this award Antonia worked for Christies and Felicity for the dealer Morris Bennett. They moved to their gallery  at 114 Kensington Church Street in 1987.

The wide range of ceramics they carried reflected their interests in  fine 18th and early 19th century English wares and also Continental porcelain, particularly  that of the early German factories and French soft paste porcelain, and early Japanese. They were involved in researching the 18th Century independent London decorators such as James Giles, and have an abiding interest in the cross-fertilisation of  styles and designs between East and West and the Continent and England. They pieces are represented in major private and museum collections world wide.

Every year they had an important selling exhibition of noteworthy pieces from private collections and their own acquisitions, with an accompanying catalogue, and exhibited at the Masterpiece Fair.

They mounted several important academic loan exhibitions, including The Dragon and the Quail on Kakiemon porcelain and Tea, Trade and Tea Canisters which explored the history and development of the European tea canister, both of which were accompanied by a highly regarded catalogue. Most recently they edited and published the monograph accompanying the exhibition,  Sir Hans Sloane’s Plants on Chelsea Porcelain. They have also been consultants for, and curated and mounted, other exhibitions for organisations such as the English Ceramic Circle and independent researchers.

Upon selling their shop they founded Stockspring Ceramics Consultants as a vehicle to continue their interests in antique ceramics and, with their considerable experience, help collectors with their collections

Antonia has been on the ceramics vetting committees of several major antiques fairs. Felicity is an Honourary Vice President of the English Ceramic Circle and was Programme Organiser for its series of seminars on the history of style and ceramics, at the Victoria and Albert Museum. She has also lectured extensively both in England and overseas, and given papers of original research to the ECC which have been published in the Transactions of the ECC. Both  have been co-authors of several academic monographs, catalogues and papers on ceramics.