Denmark-England
There were two Danish attacks on Norman England. The first was an invasion in 1069–1070 conducted in alliance with various English rebels which succeeded in taking first York and then Ely before the Danes finally accepted a bribe to leave the country. The second was a large-scale raid in 1075, intended to support the Revolt of the Earls, in which the Lincolnshire coast and York were both ravaged. A third attack was planned in 1085, and a large invasion fleet composed of Danish, Flemish, and Norwegian vessels was assembled which never sailed.