The Viking army withdrew from Reading in the autumn of 871 to take up winter quarters in Mercian London. Although not mentioned by Asser or by the "Anglo-Saxon Chronicle", Alfred probably paid the Vikings cash to leave, much as the Mercians were to do in the following year. Hoards dating to the Viking occupation of London in 871/872 have been excavated at Croydon, Gravesend and Waterloo Bridge. These finds hint at the cost involved in making peace with the Vikings. For the next five years, the Danes occupied other parts of England.