- The Elements of Drawing: John Ruskin, Victorian Art Education, and the Use of Teaching Collections, Ashmolean Museum, Oxford, 20 October 2004.
- ‘Mapping Connections between Digital Technologies and Artistic Practice and Research’, Digital Resources for the Humanities and Arts (DRHA) 2006, Dartington Hall, 4 September 2006 (with Mike Pringle).
- ‘Renaissance Material Culture – Conceptions and Receptions’, Conception:Reception, Association of Art Historians 31st Annual Conference, 31 March–2 April 2005 (with Paula Hohti).
- ‘Articulating Meanings in Late Medieval and Early Modern Interiors’, ARTiculations, Association of Art Historians 29th Annual Conference, 10–13 April 2003 (with Flora Dennis).
- ‘The Biography of the Object in Medieval and Renaissance Italy, II: The Living Object’, 37th International Congress on Medieval Studies, Kalamazoo, 3 May 2002 (papers published as The Biography of the Object in Late-Medieval and Renaissance Italy).
- ‘Representing the World of Goods: Attitudes to Consumption in the Renaissance’, Representing Design – 1400 to the present day, Design History Society Annual Conference, 20–22 September 2001 (with Evelyn Welch).
- ‘Depicted Bodies and Present Souls?’, Body & Soul: Exploring objects – making myths, Association of Art Historians 26th Annual Conference, 6–9 April 2000 (with Robert Maniura) (papers published as Presence: The Inherence of the Prototype within Images and Other Objects).
- ‘Values in Renaissance Art’, Images and Values, Association of Art Historians 25th Annual Conference, 9–11 April 1999 (with Gabriele Neher) (papers published as Revaluing Renaissance Art).
- ‘From Kiosks to Linked Data: The Digital Cataloguing and Management of the National Gallery’s Collections’, plenary lecture, Collective Imagination 2019 (TMS users’ conference), Dublin, 10-11 April 2019.
- ‘Documentation: What Should We Be Doing Next?’, Collections Trust Conference, Natural History Museum, London, 22 November 2015.
- ‘A Revision of the Hornbostel-Sachs Classification in 2011 by the MIMO Consortium’, Reflecting on Hornbostel-Sachs’ Versuch a Century Later, Fondazione Ugo e Olga Levi, Venice, 3-4 July 2015 (with Margaret Birley and Arnold Myers).
- ‘“A Practical and Critical School of Fine Art for English Gentlemen”: John Ruskin’s Teaching of Art in Oxford, 1869–1885’, Towards a Science of Art History: J. J. Tikkanen and Art Historical Scholarship in Europe, Ateneum Art Museum (Finnish National Gallery), Helsinki, 8 December 2007.
- ‘The Hunt for Submarines in Classical Art: Mappings between Scientific Innovation and Artistic Inspiration’, Digital Resources for the Humanities and Arts (DRHA) 2006, Dartington Hall, 4 September 2006 (session on ‘Mapping Connections between Digital Technologies and Artistic Practice and Research’).
- ‘Courtly Confidence and Republican Anxiety: The Politics of Magnificence and Fifteenth-century Italian Architecture’, the Material Renaissance conference, University of Manchester, 5 March 2004.
- Earlier versions given at the Society for Court Studies Seminar, 17 November 2003; the Oxford Art History Seminar, 11 June 2003; the Material Renaissance conference, University of Sussex, 7 April 2003; the Sussex Centre for Research in the History of Art Seminar, 5 June 2002; and the V&A/RCA MA course in History of Design Research Seminar, 23 April 2002.
- ‘Oil and Hellenism: The d’Este Court and Realism in Ferrarese Art of the Fifteenth Century’, College Art Association 92nd Annual Conference, Seattle, 19 February 2004 (session on ‘East-West Innovations and Early Modern Court Culture’).
- ‘The Ruskin Project: Digitising the Ruskin Teaching Collection at the Ashmolean Museum’, with Jonathan Miller, Les institutions culturelles et le numérique / Cultural Institutions and Digital Technology, ICHIM 2003, 10 September 2003.
- Earlier versions presented at the Whistler Centenary Conference, 4 September 2003 and at DRH 2003, 1 September 2003.
- ‘Databases and Art History: The Material Renaissance project’, Digital Art History? Exploring practice in a network society, 18th CHArt Annual Conference, 15 November 2002.
- ‘Living Pictures in Renaissance Ferrara’, Research Seminar, Fine Art Department, University of Edinburgh, 7 December 2000.
- Earlier versions presented at the 35th International Congress on Medieval Studies, Kalamazoo, 5 May 2000 (session on ‘The Life of Images in Late Medieval and Renaissance Ferrara’) and Body & Soul: Exploring objects – making myths, Association of Art Historians 26th Annual Conference, 7 April 2000 (session on ‘Depicted Bodies and Present Souls?’).
- ‘Art and Life in the Renaissance: A Confusion of Identities?’, Identities, Association of Art Historians 24th Annual Conference, 5 April 1998 (session on ‘Fashioning Identities in Renaissance Art’).
- ‘Giovanni Sabadino degli Arienti and a Practical Definition of Magnificence’, Beauty, Association of Art Historians 22nd Annual Conference, 13 April 1996 (session on ‘Concepts of Beauty in Renaissance Art’).
- Earlier versions presented at the Research Seminar in Architectural History at the Courtauld Institute, and at the Staff/Student Research Seminar, Department of Art History & Theory, University of Essex.
- ‘Giovanni Sabadino degli Arienti’s Account of Francesca Venusta and the Depiction of the Battle of San Ruffillo in San Francesco, Bologna’, Forward: Art and industry, Association of Art Historians 20th Annual Conference, 8 April 1994 (session on ‘Renaissance Women Patrons’).
- ‘Piero’s Patterns of Intention? Michael Baxandall and the Historical Explanation of Piero della Francesca’s Baptism of Christ’, Graduate Students’ Symposium, University of Essex, May 1990.
- ‘Collections In Flux: Documentation’, Soldiers’ Tales: Collecting and Sharing Military and Musical Heritage, a symposium organised by the Musical Instruments Resource Network and Army Museums Ogilby Trust, Music Faculty, University of Oxford, 22 August 2019.
- ‘What are we asking Collections Management Systems to do today?’, CIDOC 2018 conference, Heraklion, 29 September 2018.
- ‘Spreading the Word: Explaining What Museum Documentation Is – and Why It’s Important’, 2016 CIDOC conference, held within ICOM Milano 2016, 4 July 2016 (with Angela Kipp).
- ‘Reviewing Your Collection? Getting the Documentation Right …’, Collections seminar strand, Museums + Heritage Show 2016, Olympia, 19 May 2016.
- ‘The Relevance of Documentation in Museums’, keynote lecture, Det relevante Museum 2014, Museene i Sør-Trøndelag, Trondheim, 22 October 2014.
- ‘Documentation at the Horniman Museum: Past History, Future Challenges’, Det relevante Museum 2014, Museene i Sør-Trøndelag, Trondheim, 22 October 2014.
- ‘Museum Cataloguing: Parts and Wholes’, British Printed Images to 1700 workshop on cataloguing prints, Birkbeck College, 7 March 2008.
- ‘Art History, Images and Copyright’, Why Copyright Matters, University of Bristol, 7 December 2006.
- ‘Image Quality Issues’, CLIC Digital Image Workshop, Oxford University Computing Service, 7 July 2005.
- ‘Success and Failure in Digital Projects’, Digital Libraries workshop, Middlesex University, 16 January 2004.
Museum documentation manager and art historian