Light switch on wall

You could use a blanking plate -

http://www.screwfix.com/p/lap-1-gan...tracking url&gclid=CM-qmqCRz9ECFRa3Gwod9NQISQ

 

If your lucky and just a one gang switch with is just 2 wires. You could disconnect at the light it feeds.

Then prove dead and terminal block and plaster over.

Maybe send a picture wait for what sparks say

 

Light switch on wall

 

If you simply disconnect at light fitting your still going to have a live feed at the switch

Better to disconnect switch and pull cable out or at least disconnect from where it's fed - junction box / ceiling rose, etc

Then can happily fill and plaster cut out

 

thats how i would say to do it

 

I was thinking along the terms of the permanent live supply cable from the consumer board goes to the fitting first.

And surely it then disconnected the live and the permant live are then dead. Pull out cable what ever then.

Maybe I'm missising something? But you do say ceiling rose after which is what I said.

Guessing it's depending how it's wired Dave happy to be corrected

 

No problem disconnecting live and switch live at rose if it loop in loop out