May, Hexham Northumbria Arts Society, 'The Italian Renaissance: The Quattrocento - Masaccio to Botticelli'

February, Arts Society Tring Park, 'Giotto and the Early Italian Renaissance'

February, Arts Society Hoddesdon, 'Michelangelo, Copernicus and the Sistine Chapel'

November, Arts Society Bramhall Cheshire, 'Shadows in Western Painting: 'Standing between Darkness and Light'

June, St Albans Cathedral, Adult Learning Programme, Study Day on the Italian Renaissance (1) Giotto and the Early Italian Renaissance' (2) 'The Quattrocento (1400s) - Masaccio to Botticelli' and (3) 'The High Renaissance - Leonardo, Raphael and Michelangelo'

May, Peterborough Arts Society, 'Shadows in Western Painting: 'Standing between Darkness and Light'

February, U3A, Hermanus Cape Town, South Africa, 'Affairs of the Heart: the Symbolism of the Heart in Art'

February, Arts Society Grantham 'Sir Christopher Wren and St Paul's - his life, works and times'

January, Arts Society Moorpark Watford, 'Astronomical Imagery in the Work of the Pre-Raphaelite Brother(and Sister)hood'

July, St Albans Cathedral, Adult Learning Programme, 'The Influence of Astronomy and Cosmology on Medieval Art'

April, Arts Society Welwyn Garden City Hertfordshire, 'Affairs of the Heart: the Symbolism of the Heart in Art'

April, U3A, Cape Town, South Africa, 'Sir Christopher Wren and St Paul's - his life, works and times'

January, Arts Society Lomond and Argyll (Helensburgh), 'The Architect Borromini and Kepler's New Astronomy'

January, Arts Society West Wycombe, Buckinghamshire, 'Giotto and the Early Italian Renaissance' (online due to covid)

January, Delaware Astronomical Society Book Club, 'Sir Christopher Wren and St Paul's - his life, works and times'

January, For Restoringdarkness.com, Toronto, interview blog 'Painting the Night Sky'

December, St Albans Cathedral, Adult Learning Programme, 'Dark Skies and Light Pollution: An Art-Historical Approach'

November, Arts Society, Appleby, Westmoreland, 'Giotto and the Early Italian Renaissance'

November, St Albans & Hertfordshire Architectural and Archaeological Society, 'Sir Christopher Wren: Architect-Astronomer'

November, Cassidy Cash interview blog, Alabama on 'Anne Boleyn'

October, Cassidy Cash Alabama, blog/interview format, on 'Sir Thomas Gresham and Gresham College'

20-24 September 2022 (postponed from June 2020), XI Conference on the Inspiration of Astronomical Phenomena, Caltech, Pasadena

February, Arts Society St Albans, 'Sir Christopher Wren: Architect-Astronomer'

February, Arts Society Harpenden, 'Michelangelo, Copernicus and the Sistine Chapel'

December, Arts Society (for 'Artvent'), 'Shadows in Western Painting: 'Standing between Darkness and Light'

November, Arts Society, Brussels, 'Giotto and the Early Italian Renaissance'

November, U3A, Hermanus Cape Town, South Africa, 'Anne Boleyn: Harlot or Heroine?'

September, St Albans Civic Society, 'Anne Boleyn: Harlot or Heroine?'; Anne Boleyn and Hever Castle'

September, U3A, Hermanus Cape Town, South Africa, 'The Last Judgment Decoded: Michelangelo, Copernicus and the Sistine Chapel'

August, U3A Hermanus Cape Town, South Africa, 'Giotto and the Early Italian Renaissance'

July, International Congress on the History of Science, Prague, Presentation on Michelangelo (online)

September, presentation, Arts Society, 'The Early Italian Renaissance: The Sienese School'

February, The Last Judgment Decoded: Michelangelo, Copernicus and the Sistine Chapel', London Art and More Society, Richmond

February, 'Sir Thomas Gresham and the Tudors', Arundel Sussex, Swallow Club