Recent appearances on TV, Film and Radio
Callen features in the November 2018 documentary Exhibition on Screen: Degas: Passion for Perfection

Callen features in Series 7 of 'Fake or Fortune?' discussing Toulouse-Lautrec's early sketchbooks, September 2018

Talking on Monet's plein air painting techniques, Callen features in the film Monet and Architecture shown at the exhibition, National Gallery, London, Summer 2018

Callen featured in The Listening Service BBC Radio 3 broadcast on 'Debussy the Impressionist?', 18 February 2018

Callen appears in 'Fake or Fortune?' Series 6 - broadcast by ABC in Australia, January 2018

Callen appears in two episodes in Series 6 of BBC1's 'Fake or Fortune?' in Autumn 2017 - 'Tom Roberts' and 'Paul Gauguin'

Callen appears in BBC1's 'Fake or Fortune?' programme on Renoir, July 2015

Callen appears in BBC1's 'Fake or Fortune?' on Degas's Dancer oil study first televised in September 2012

Callen contributed research to BBC1's Series 1 of 'Fake or Fortune?' on Claude Monet, 2011