Tomlinson's book "Ex-Voto" (2019) is about ex-voto (votive offerings made to a saint or to a divinity) left at several European destinations of Christian pilgrimage: the Sanctuary of Our Lady of Lourdes, France; Ballyvourney, Ireland; and the , Poland, close to the border with Belarus. The Sanctuary at Lourdes surrounds the Catholic shrine to Our Lady of Lourdes (a Roman Catholic title of the Blessed Virgin Mary) who is venerated there in honour of the Lourdes apparitions of 1858. Writing in "The Guardian," Sean O'Hagan included an exhibition of "Ex-Voto" at Rencontres d'Arles at number 6 in his "Top 10 photography shows of 2019"; and the book at number 3 in his "Top 15 photography books of 2019", about which he wrote: