A connector device comprising a cable assembly and a connector apparatus configured to connect to the cable assembly, wherein the cable assembly comprises: a coaxial cable comprising an inner conductor, a conducting shield around the inner conductor, an end connector, and an insulating layer separating the inner conductor and the conducting shield; a further conductive shield or armour (19,20) around the coaxial cable; and at least one cable/wire and/or at least one first fluid conduit located between the coaxial cable and the further conductive shield or armour (19,20); and wherein the connector apparatus comprises:- a bushing; a compression spring; a housing that houses a connector and at least one further connector; wherein the connector is configured to electrically connect to the coaxial cable when the connector apparatus and the cable assembly are in an engaged state and the at least one further connector is configured to connect to the at least one wire and/or at least one first fluid conduit when the connector apparatus and the cable assembly are in an engaged state, and wherein the bushing and the compression spring are arranged such that when the cable assembly and the connector apparatus are in the engaged state the compression spring applies force between a face of the bushing and a face of the coaxial cable end connector thereby to allow one of the coaxial cable and the connector apparatus to rotate freely relative to the other of the coaxial cable and the connector apparatus; and wherein the conducting shield of the coaxial cable is configured to be maintained at a first electrical potential and the further conductive shield or armour (19,20) of the cable assembly is configured to be maintained at a second, different electrical potential. a coaxial cable comprising an inner conductor, a conducting shield around the inner conductor, an end connector, and an insulating layer separating the inner conductor and the conducting shield; a further conductive shield or armour (19,20) around the coaxial cable; and at least one cable/wire and/or at least one first fluid conduit located between the coaxial cable and the further conductive shield or armour (19,20); and wherein the connector apparatus comprises:- a bushing; a compression spring; a housing that houses a connector and at least one further connector; wherein the connector is configured to electrically connect to the coaxial cable when the connector apparatus and the cable assembly are in an engaged state and the at least one further connector is configured to connect to the at least one wire and/or at least one first fluid conduit when the connector apparatus and the cable assembly are in an engaged state, and a bushing; a compression spring; a housing that houses a connector and at least one further connector; wherein the connector is configured to electrically connect to the coaxial cable when the connector apparatus and the cable assembly are in an engaged state and the at least one further connector is configured to connect to the at least one wire and/or at least one first fluid conduit when the connector apparatus and the cable assembly are in an engaged state, and wherein the bushing and the compression spring are arranged such that when the cable assembly and the connector apparatus are in the engaged state the compression spring applies force between a face of the bushing and a face of the coaxial cable end connector thereby to allow one of the coaxial cable and the connector apparatus to rotate freely relative to the other of the coaxial cable and the connector apparatus; and wherein the conducting shield of the coaxial cable is configured to be maintained at a first electrical potential and the further conductive shield or armour (19,20) of the cable assembly is configured to be maintained at a second, different electrical potential.