Glover achieved fame as a painter of "Italianate" romantic landscapes of Britain (including The falls of Foyers on Loch Ness, the Lake District and London) and Southern Europe. He became known in both England and France as "the English Claude". This phrase was making comparison with Glover and the French seventeenth century artist Claude Lorrain, whose works collected by eighteenth century English "grand tourists", strongly influenced the evolution of the English style, in both painting and the layout of landscape gardens.