A base station operable to share resources between at least two network operators (2-A, 2-B), the base station comprising: means for determining a contribution to a load on the base station associated with a first of the network operators; means for providing the determined contribution to the load on the base station associated with the first network operator (2-A) to a further base station (4-A, 6) over an X2 interface, for use in load balancing between the base stations wherein the further base station (4-A, 6) is at least associated with the first network operator (2-A); means for receiving from the further base station (4-A, 6) a determined contribution to the load on the further base station (4-A, 6) associated with the first network operator (2-A), for use in said load balancing between the base stations; means for performing at least one load balancing action, based on said determined contribution received from said further base station (4-A, 6) and said determined contribution to a load on the base station associated with the first network operator (2-A); wherein said at least one load balancing action comprises: adjusting a handover trigger level associated with the first network operator (2-A), based on said determined contribution received from said further base station (4-A, 6) and said determined contribution to a load on the base station associated with the first network operator (2-A); and transmitting, to the further base station (4-A, 6), a request for the further base station (4-A, 6) to advance or delay handover of connections associated with the first network operator (2-A). means for determining a contribution to a load on the base station associated with a first of the network operators; means for providing the determined contribution to the load on the base station associated with the first network operator (2-A) to a further base station (4-A, 6) over an X2 interface, for use in load balancing between the base stations wherein the further base station (4-A, 6) is at least associated with the first network operator (2-A); means for receiving from the further base station (4-A, 6) a determined contribution to the load on the further base station (4-A, 6) associated with the first network operator (2-A), for use in said load balancing between the base stations; means for performing at least one load balancing action, based on said determined contribution received from said further base station (4-A, 6) and said determined contribution to a load on the base station associated with the first network operator (2-A); wherein said at least one load balancing action comprises: adjusting a handover trigger level associated with the first network operator (2-A), based on said determined contribution received from said further base station (4-A, 6) and said determined contribution to a load on the base station associated with the first network operator (2-A); and transmitting, to the further base station (4-A, 6), a request for the further base station (4-A, 6) to advance or delay handover of connections associated with the first network operator (2-A). adjusting a handover trigger level associated with the first network operator (2-A), based on said determined contribution received from said further base station (4-A, 6) and said determined contribution to a load on the base station associated with the first network operator (2-A); and transmitting, to the further base station (4-A, 6), a request for the further base station (4-A, 6) to advance or delay handover of connections associated with the first network operator (2-A).