A communications device (306, 506) for transmitting data to or receiving data from a mobile communications network, the mobile communications network including infrastructure equipment (304, 504), the infrastructure equipment providing a wireless access interface for transmitting signals to or receiving signals from the communications device, the communications device comprising: a transmitter configured to transmit the signals to the infrastructure equipment via the wireless access interface in accordance with a first radio access technology, a receiver configured to receive the signals from the infrastructure equipment via the wireless access interface in accordance with the first radio access technology, and a controller (306b, 510) for controlling the transmitter and the receiver, wherein the wireless access interface provides a primary carrier within a first frequency range, which forms a primary cell providing a contiguous set of communications resources across the first frequency range, and the controller (306b, 510) is configured in combination with the receiver and transmitter to generate data representing an estimation of a location of the communications device (306, 506), to detect signals received within one or more predefined candidate channels within a second frequency range which is different to and mutually exclusive from the first frequency range at the estimated location, each of the candidate channels in the second frequency range representing a minimum unit of communications resource which can be used to receive data on the downlink, and the detected signals within the second frequency range being at least one of signals transmitted by the infrastructure equipment or another communications device in accordance with the first radio access technology or transmitted in accordance with at least one other radio access technology, to generate, for each of the one or more candidate channels, channel measurement information from the signals detected within the candidate channels at the estimated location for use in selecting one or more component carriers from one or more candidate carriers, to receive a request from the infrastructure equipment for the channel measurement information and the estimated location, and to transmit the channel measurement information, with an indication of the estimated location, for each of the candidate channels to the infrastructure equipment, wherein the channel measurement information for a candidate carrier includes information representative of measurements determined from signals received from the first radio access technology and the at least one other radio access technology and the controller is configured to combine measurement information determined for the first radio access technology with measurement information determined for the at least one other radio access technology to form a combined measurement information for the candidate carrier. a transmitter configured to transmit the signals to the infrastructure equipment via the wireless access interface in accordance with a first radio access technology, a receiver configured to receive the signals from the infrastructure equipment via the wireless access interface in accordance with the first radio access technology, and a controller (306b, 510) for controlling the transmitter and the receiver, wherein the wireless access interface provides a primary carrier within a first frequency range, which forms a primary cell providing a contiguous set of communications resources across the first frequency range, and the controller (306b, 510) is configured in combination with the receiver and transmitter to generate data representing an estimation of a location of the communications device (306, 506), to detect signals received within one or more predefined candidate channels within a second frequency range which is different to and mutually exclusive from the first frequency range at the estimated location, each of the candidate channels in the second frequency range representing a minimum unit of communications resource which can be used to receive data on the downlink, and the detected signals within the second frequency range being at least one of signals transmitted by the infrastructure equipment or another communications device in accordance with the first radio access technology or transmitted in accordance with at least one other radio access technology, to generate, for each of the one or more candidate channels, channel measurement information from the signals detected within the candidate channels at the estimated location for use in selecting one or more component carriers from one or more candidate carriers, to receive a request from the infrastructure equipment for the channel measurement information and the estimated location, and to transmit the channel measurement information, with an indication of the estimated location, for each of the candidate channels to the infrastructure equipment, wherein the channel measurement information for a candidate carrier includes information representative of measurements determined from signals received from the first radio access technology and the at least one other radio access technology and the controller is configured to combine measurement information determined for the first radio access technology with measurement information determined for the at least one other radio access technology to form a combined measurement information for the candidate carrier.