Embodiments of the invention provide methods, devices and computer programs arranged to control access to a cell in a communication network. One embodiment comprises an apparatus comprising a processing system arranged to cause the apparatus to: receive a plurality of Closed Subscriber Group identifiers (CSG IDs) assigned to the cell; select and transmit a first CSG ID from the plurality of CSG IDs on the basis of a first load condition on the cell; and select and transmit a second, different, CSG ID from the plurality of CSG IDs on the basis of a second, different, load condition on the cell.