1. Method of searching in a collection of data items stored in association with data representative of locations, including obtaining data representative of co-ordinates defining a location; obtaining data representative of a direction; causing a system ( 22 , 28 ) for searching in the collection to use the data representative of the direction and the co-ordinates to identify data items stored in association with data representative of locations within a spatial range determined by at least the direction and the co-ordinates.