[1] Harrison was a founding trustee of the English Stained Glass Museum, located at Ely Cathedral, and curator of its collection from 1975 to 1980.
He contributed an essay to the catalogue of the Bacon centennial retrospective exhibition shown in 2008–2009 at Tate Britain, the Prado in Madrid and the Metropolitan Museum of Art in New York.
[7][8] He also edited Early Color, a collection of the photography of Saul Leiter,[9] and prepared the work of Ron Traeger for exhibition.
Harrison has authored several books about the British artist's work,[10] and on Bacon’s life and his milieu, beginning with Points of Reference in 1999.
[14] Peter Conrad praised ‘the careful investigation and deft criticism’ of his In Camera: Francis Bacon, concluding that it was "an opulent, paradoxically beautiful book".