Richard Bagnall-Smith

Richard is a co-founder of Cadell and together with Willem works with over 30 of the leading Legal Firms, Professional Trustees, Private Banks and Family Offices across the UK, Switzerland, Channel Islands and Monaco. With many years as CMO and Head of Business Development on the Global Executive Management Board at Christie’s, followed by a stint at Qatar Museum’s Authority, Richard has extensive experience of the art market.

Email -

Willem de Gier

Willem is a co-founder of Cadell and together with Richard works with over 30 of the leading Legal Firms, Professional Trustees, Private Banks and Family Offices across the UK, Switzerland, Channel Islands and Monaco. A former Global Executive Management Board member at Christie’s, Willem was responsible for Group Operations. Additionally, Willem has a background in Corporate Finance, Risk Management and Management Consulting.

Caroline Sayan

Caroline is President and CEO of Cadell Inc based in New York, Caroline joins Cadell after a distinguished 25-year career at Christie’s. Most recently, she was Global Managing Director overseeing all international auction, private and digital deal negotiations and sales of 20thCentury art. Previously located in Beijing, Caroline launched the first western art auctions in Mainland China. In addition, she established private and retail sales as a global business division and established the first commercial office overseeing global financial deal negotiations including lending and loaning services.

For further information, please contact us on
Business address: 58 Sutherland Place, London W2 5BY

Conference Speaking

Speaker at Transcontinental Trusts, Geneva Forum 2019 on ‘Art as a Trust Investment’.

Panel participants included:
Richard Bagnall-Smith, Director, Cadell.
Sandrine Giroud, Partner, Lalive.
Rebecca Fine, General Counsel,
Athena Art Finance.
Phil Lenz, Deputy Country Manager,
Butterfield Trust.

Speaker at International Private Client Forum, Villa d’Este 2018 on ‘Masterpiece or massive fraud? Art for the uninitiated’.

Panel participants included:
Willem de Gier, Director, Cadell.
Simon Fitzpatrick, Partner, Boodle Hatfield.
Alexander Jolles, Partner, Schellenberg Wittmer.
Charles Hill, former Detective Chief Inspector, Metropolitan Police, London.

Speaker at STEP Alpine Conference, Interlaken 2020 on ‘Art assets: practical advice for Trustees when buying, holding and selling’.

Panel participants included;
Willem de Gier, Director, Cadell.
Sandrine Giroud, Partner, Lalive.
Amanda Gray, Partner, Mishcon de Reya.

Step Logo

Cadell have also been speakers at STEP events in; Geneva, Zurich, Monaco, Guernsey, Jersey, IoM and Dubai.


A selection of artists Cadell has advised on

  • Josef Albers
  • Francis Bacon
  • Jean-Michel Basquiat
  • Max Beckman
  • Peter Blake
  • Ferdinand Bol
  • Louise Bourgeois
  • George Braque
  • Peter Breughel
  • Jan Breughel the Elder
  • Cecily Brown
  • Alberto Burri
  • Alexander Calder
  • Anthony Caro
  • Enrico Castellani
  • Lynn Chadwick
  • Marc Chagall
  • George Condo
  • Adriaen Coorte
  • Tony Cragg
  • Salvador Dali
  • Willem de Kooning
  • Emiliano Di Cavalcanti
  • Raul Dufy
  • Albert Edelfelt
  • Tracey Emin
  • Max Ernst
  • Jan Fabre
  • Sam Francis
  • Helen Frankenthaler
  • Thomas Gainsborough
  • Jean-Léon Gérôme
  • Franz Gertsch
  • Alberto Giacometti
  • Gilbert & George
  • Juan Gris
  • Philip Guston
  • Damien Hirst
  • Ivon Hitchens
  • Howard Hodgkin
  • Jenny Holzer
  • Jasper Johns
  • Donald Judd
  • Wassily Kandinski
  • Anselm Kiefer
  • Ernst Ludwig Kirchner
  • Gustav Klimt
  • Georg Kolbe
  • Leon Kossof
  • Lee Krasner
  • Yayoi Kusama
  • August Macke
  • Kazimir Malevich
  • Gerhard Marks
  • Henri Matisse
  • Yue Minjun
  • Joan Miro
  • Amadeo Modigliani
  • Claude Monet
  • Koloman Moser
  • Francis Motherwell
  • Gabriel Münter
  • Albert Oehlen
  • Clara Peeters
  • Grayson Perry
  • Pablo Picasso
  • Camille Pissaro
  • Sigmar Polke
  • Robert Rauschenberg
  • Rembrandt
  • Pierre-August Renoir
  • Gerhard Richter
  • Bridget Riley
  • Mark Rothko
  • Rachel Ruysch
  • Helene Schjerfbeck
  • Richard Serra
  • Kazuo Shiraga
  • Alfred Sisley
  • Tony Smith
  • Harald Sohlberg
  • Chaim Soutine
  • Frank Stella
  • David Tenniers
  • Wayne Thiebaud
  • Wolfgang Tillmans
  • Balthasar Van Der Ast
  • Alexej Von Jawlensky
  • Andy Warhol
  • William Wauer
  • Christopher Wool
  • Zao Wou-Ki
  • Peter Wouveman
  • Zhang Xiaogang
  • Anders Zorn