An electrical connector assembly for the electrical connection of one or more minerally insulated cables (11), the assembly comprising a pot seal arrangement (10) arranged in use to connect the minerally insulated cable (11) to a connector (22); at least one cable alignment plate (21, 31); and, a backshell (20) shaped so as to contain the pot seal (10) and cable alignment plate (21); the cable alignment plate (21) and pot seal (10) being arranged so as to locate within the backshell (20) such that in use, connecting the backshell (20) to the connector (22) forces the backshell (20), cable alignment plate (21) and pot seal (10) into a cooperative engagement.