You can spur off the socket into a switch fused spur. Put in a 5amp fuse to bring the amp rating down and then you can connect to your light from this.
Was asked to change a cooker over for customer. Must be cheap from China with a hardwired 2.5mm flex prewired into the unit. The original cooker required a 10.0mm T+E. The question is.... Can I take of the outlet fed from the isolator with a 10.0mm T+E and put on a single socket or else a 13a...