Methods and apparatus are disclosed for enabling selection of a remote service node from a plurality of possible nodes, each capable of providing a service, and each associated with a service node control entity. The method comprises: receiving a user request in respect of a service required by a user, the request containing a first user device routing identifier relating to the location in the network of the user device, and a service indication indicative of an appropriate service provider; identifying from the service indication a service node control entity associated with the service provider; sending to the service node control entity a service node request containing a second user device routing identifier differing from the first user device routing identifier but selected at least partly in dependence thereon; receiving from the service node control entity an indication of a remote service node capable of providing the required service; and providing an indication of the remote service node to the user device.