There is described a method of facilitating handover of a user device between a source base station component in a first communications network of a first network type and a target base station component in a second communications network of a second network type. The method includes determining an identifier of at least one target gateway component connected to the target base station component in the second communications network. A handover request message is then generated in the first communications network, the handover request message incorporating the identifier of the at least one target gateway component. The handover request message is then transmitted to the second communications network. Apparatus for performing this and other related methods is also described, for example eNodeB, gateway and user device components.