Oxford Authentication® has been leading the field in authenticating pottery, ceramics, porcelain, stoneware and bronze since 1997. Its founding director, Doreen Stoneham, has been conducting authenticity tests since 1970. Our clients include many major museums, international foundations, private collectors, auction houses such as Christie’s, Bonhams and Sotherby’s and antique dealers all over the world.

The Directors

Doreen Stoneham


A director of Oxford Authentication® Ltd, Doreen Stoneham has been conducting authenticity tests since 1970, originally with the Research Laboratory for Archaeology at Oxford University, which pioneered the process. It was there, in the early 1980s, that Doreen perfected the technique for the safe and reliable testing of porcelain.

Doreen has published a number of papers and articles on subjects ranging from authenticity testing to scientific research on thermoluminescence, as well as making radio and television appearances and lecturing extensively. She has also been called as an expert witness in courts of justice in both the UK and US. In 2008 Doreen was awarded the Gabor Medal and Prize by the Institute of Physics for her distinguished work in the application of physics in an industrial, commercial or business context.

Doreen graduated from Bristol University in Physics.

Elise Barnard


Elise Barnard, daughter of Doreen, has been a Director of Oxford Authentication® Ltd since March 2011. She has a degree in Natural Sciences from Cambridge University and has 26 years of laboratory and quality assurance experience from her career in the aerospace industry. Following training from Doreen Stoneham, she is taking a more active role in quality assurance and radiation protection.

Nicky Thomas


Nicky Thomas, daughter of Doreen, has been a director of Oxford Authentication® Ltd since March 2011. She studied Physics at Oxford University, and is a Member of the Institute of Physics and Fellow of the Royal Society of Arts. Nicky has worked in the field of physics for over 20 years, including work for the Institute of Physics. Nicky has a long-standing interest in the field of art authentication.