The present invention provides for a mobile radio communications device arranged for operation within a mobile radio communications network comprising a plurality of location areas each comprising a plurality of cells, the device including means for identifying an approaching border of an area with a neighbouring area, triggering means for triggering location update signalling from the device and to reflect a change in area responsive to the identification of the said border, and the device further including delaying means for delaying transmission of a location update signalling such that, particularly if a random delay is employed, the cell traffic load can be spread out in time and its required location.