Table lamp earth

wildcat21

Hi. I'm rewiring an old table lamp, all metal, that's from probably the 1940's.

It currently isn't earthed, and obviously I want to earth it. 

I can't change the lampholder. (It's complicated) but I can easily run the earth from the cable to the inside of the body of the lamp where there are various existing screws I can use to attach it. Will this be sufficient, or do I need to try and earth the actual bulb holder itself. If so how do I go about that. 

Changing the bulb holder is REALLY not an option. 

Ectophile

If it's all metal, then it shouldn't really matter where you connect the earth to.  But it's a good idea to check with a multimeter on its continuity setting, to see if all the bits of metal are actually connected to each other.

wildcat21

That makes sense. Thank you.