A method of operating a mobile communications network, the method comprising the steps performed by an apparatus (122, 300) of the network: a) in response to a mobile terminal losing a first connection with a first network base station (112a, 112b, 112c) and then making a second connection with a second network base station, determining a network search parameter value for the mobile terminal, wherein the network search parameter value represents a period with which the mobile terminal will perform periodic searches for its home mobile network; b) transmitting the network search parameter value to the mobile terminal; c) periodically re-determining the value of the network search parameter if the mobile terminal is still connected to the second base station; and d) transmitting the network search parameter value determined in step c) to the mobile terminal, wherein: i) the first network base station comprises a femtocell (110a, 110b, 110c) associated with the home mobile network; ii) the second network base station comprises a macrocell associated with a visited mobile network; and iii) the area covered by the macrocell comprises a plurality of femtocells (110a, 110b, 110c) located therein; and wherein: the determining and re-determining of the value of the network search parameter value in steps a) and c) respectively is performed by an algorithm based on one or more of a UE timer, operator preferences, UE capabilities, user preferences, mobility history for the mobile terminal, location of the mobile terminal, condition of the mobile terminal, quality of experience, 'QoE', data, network failure data, the number of mobile devices looking for the home mobile network and an inference that there is a high probability that the mobile terminal is within the coverage of a femtocell. a) in response to a mobile terminal losing a first connection with a first network base station (112a, 112b, 112c) and then making a second connection with a second network base station, determining a network search parameter value for the mobile terminal, wherein the network search parameter value represents a period with which the mobile terminal will perform periodic searches for its home mobile network; b) transmitting the network search parameter value to the mobile terminal; c) periodically re-determining the value of the network search parameter if the mobile terminal is still connected to the second base station; and d) transmitting the network search parameter value determined in step c) to the mobile terminal, i) the first network base station comprises a femtocell (110a, 110b, 110c) associated with the home mobile network; ii) the second network base station comprises a macrocell associated with a visited mobile network; and iii) the area covered by the macrocell comprises a plurality of femtocells (110a, 110b, 110c) located therein; and wherein: the determining and re-determining of the value of the network search parameter value in steps a) and c) respectively is performed by an algorithm based on one or more of a UE timer, operator preferences, UE capabilities, user preferences, mobility history for the mobile terminal, location of the mobile terminal, condition of the mobile terminal, quality of experience, 'QoE', data, network failure data, the number of mobile devices looking for the home mobile network and an inference that there is a high probability that the mobile terminal is within the coverage of a femtocell.