earth-cable

So the front room of my house had all the plaster ripped off a few months back due to damp problems :rolleyes: and is due to be re-plastered next year. :) Well today I went to remove the wire terminating at a junction box from the only socket in the room and discovered the CPC of the cable was...

I am trying to fit a new lightswitch and have read that I need to connect the earth cable to the faceplate first, then to the backplate. However, I can't fit both into the hole in the faceplate. What should I do? Thanks. Paul