Sorry to bother you all with a very basic question, but.....We've just moved in to a 1930's house and when attempting to put up our ceiling lights we discovered that there was no earth connection, only a red wire and a black wire. This seems to be the same for the light sockets on the wall. The house is recently decorated throughout so i imagine the previous owners have come across this before and were advised that a rewiring was not needed?. Is it possible to live with this wiring? If not, what are our options from here? Many thanks.