Pierre Valentin is a founding partner of Constantine Cannon LLP (London) where he heads their art and cultural property law team. Prior to joining Constantine Cannon, he was a Senior Director and Associate General Counsel at Sotheby's, and more recently a partner of Withers LLP. He was a trustee of World Monuments Fund Britain (1998-2016) and Chairman of the Board (2013-2016). He founded PAIAM (Professional Advisors to the International Art Market) in 2012 and was Chairman of the Board until 2017. He founded ICRA (International Catalogue Raisonne Association) in 2019 and is Chairman of the Board. He is a trustee of the Artist's Collecting Society.
Catherine Hill heads the Art and Cultural Property team at Forsters LLP, a leading London law firm based in Mayfair where she has been a partner since 2008. She has many years' experience acting for living artists and their families, including several leading contemporary figures, on legacy, succession and taxation issues. Catherine also advises collectors, galleries and museums. She has lectured in recent years at the Royal Academy on Legacy Planning and on art law matters generally and is a member of PAIAM (Professional Advisers to the International Arts Market) and the Heritage Lawyers Group. She acts as trustee and executor for many of her artist clients.
Keith Graham is an experienced Chartered Accountant, a Partner at Haines Watts, Accountants and Business advisers. He advises individuals and businesses on Tax (both UK and International) and general financial matters, as well as providing accounting and audit services. He has developed a specialism providing services to the art sector – and has a particular interest in estate planning for artists. Clients of Haines Watts include major international galleries, dealers, and leading artists (including 3 Turner Prize winners). Keith is a Trustee of Acme Studios, and a member of PAIAM . He works with the Association of Women Art Dealers and is a former Trustee of the Ben Uri Gallery and Museum.