System and method for providing cellular services to a roaming subscriber comprising a visited public land mobile network, VPLMN. At least one processor within the VPLMN. Memory storing instructions that, when executed by the at least one processor, cause the system to instantiate one or more network functions as software processes performing data plane packet processing within a network functions virtualisation, NFV, environment hosted by the VPLMN and associated with a home public land mobile network, HPLMN, wherein the network functions provide the roaming subscriber with network services associated with the HPLMN.